diff --git a/api/Pipfile b/api/Pipfile
index 2938b37..b525518 100644
--- a/api/Pipfile
+++ b/api/Pipfile
@@ -14,7 +14,7 @@ django-extensions = "*"
 
 [packages]
 astroid = "==2.0.4"
-django = "==2.1.2"
+django = "==2.2.10"
 djangorestframework = "==3.8.2"
 lazy-object-proxy = "==1.3.1"
 mccabe = "==0.6.1"
diff --git a/api/Pipfile.lock b/api/Pipfile.lock
index 2e9307d..88a7b9e 100644
--- a/api/Pipfile.lock
+++ b/api/Pipfile.lock
@@ -1,7 +1,7 @@
 {
     "_meta": {
         "hash": {
-            "sha256": "310e1fd788e7ea498f16048ffc73c44199f3312601245f5208c35883fdd85842"
+            "sha256": "1beb36da76fe086d0a999bb1c8af6631eafc5531c00b7305d839a428405084c5"
         },
         "pipfile-spec": 6,
         "requires": {
@@ -26,10 +26,10 @@
         },
         "certifi": {
             "hashes": [
-                "sha256:339dc09518b07e2fa7eda5450740925974815557727d6bd35d319c1524a04a4c",
-                "sha256:6d58c986d22b038c8c0df30d639f23a3e6d172a05c3583e766f4c0b785c0986a"
+                "sha256:017c25db2a153ce562900032d5bc68e9f191e44e9a0f762f373977de9df1fbb3",
+                "sha256:25b64c7da4cd7479594d035c08c2d809eb4aab3a26e5a990ea98cc450c320f1f"
             ],
-            "version": "==2018.10.15"
+            "version": "==2019.11.28"
         },
         "chardet": {
             "hashes": [
@@ -54,11 +54,11 @@
         },
         "django": {
             "hashes": [
-                "sha256:acdcc1f61fdb0a0c82a1d3bf1879a414e7732ea894a7632af7f6d66ec7ab5bb3",
-                "sha256:efbcad7ebb47daafbcead109b38a5bd519a3c3cd92c6ed0f691ff97fcdd16b45"
+                "sha256:1226168be1b1c7efd0e66ee79b0e0b58b2caa7ed87717909cd8a57bb13a7079a",
+                "sha256:9a4635813e2d498a3c01b10c701fe4a515d76dd290aaa792ccb65ca4ccb6b038"
             ],
             "index": "pypi",
-            "version": "==2.1.2"
+            "version": "==2.2.10"
         },
         "django-rest-swagger": {
             "hashes": [
@@ -76,19 +76,12 @@
             "index": "pypi",
             "version": "==3.8.2"
         },
-        "drf-writable-nested": {
-            "hashes": [
-                "sha256:5c54eca93d74dc22014fb7ea54b6dbd559a058587596feba4d79078e32a83e16"
-            ],
-            "index": "pypi",
-            "version": "==0.5.1"
-        },
         "idna": {
             "hashes": [
-                "sha256:156a6814fb5ac1fc6850fb002e0852d56c0c8d2531923a51032d1b70760e186e",
-                "sha256:684a38a6f903c1d71d6d5fac066b58d7768af4de2b832e426ec79c30daa94a16"
+                "sha256:c357b3f628cf53ae2c4c05627ecc484553142ca23264e593d327bcde5e9c3407",
+                "sha256:ea8b7f6188e6fa117537c3df7da9fc686d485087abf6ac197f9c46432f7e4a3c"
             ],
-            "version": "==2.7"
+            "version": "==2.8"
         },
         "itypes": {
             "hashes": [
@@ -98,10 +91,10 @@
         },
         "jinja2": {
             "hashes": [
-                "sha256:74c935a1b8bb9a3947c50a54766a969d4846290e1e788ea44c1392163723c3bd",
-                "sha256:f84be1bb0040caca4cea721fcbbbbd61f9be9464ca236387158b0feea01914a4"
+                "sha256:93187ffbc7808079673ef52771baa950426fd664d3aad1d0fa3e95644360e250",
+                "sha256:b0eaf100007721b5c16c1fc1eecb87409464edc10469ddc9a22a27a99123be49"
             ],
-            "version": "==2.10"
+            "version": "==2.11.1"
         },
         "lazy-object-proxy": {
             "hashes": [
@@ -140,9 +133,41 @@
         },
         "markupsafe": {
             "hashes": [
-                "sha256:a6be69091dac236ea9c6bc7d012beab42010fa914c459791d627dad4910eb665"
-            ],
-            "version": "==1.0"
+                "sha256:00bc623926325b26bb9605ae9eae8a215691f33cae5df11ca5424f06f2d1f473",
+                "sha256:09027a7803a62ca78792ad89403b1b7a73a01c8cb65909cd876f7fcebd79b161",
+                "sha256:09c4b7f37d6c648cb13f9230d847adf22f8171b1ccc4d5682398e77f40309235",
+                "sha256:1027c282dad077d0bae18be6794e6b6b8c91d58ed8a8d89a89d59693b9131db5",
+                "sha256:13d3144e1e340870b25e7b10b98d779608c02016d5184cfb9927a9f10c689f42",
+                "sha256:24982cc2533820871eba85ba648cd53d8623687ff11cbb805be4ff7b4c971aff",
+                "sha256:29872e92839765e546828bb7754a68c418d927cd064fd4708fab9fe9c8bb116b",
+                "sha256:43a55c2930bbc139570ac2452adf3d70cdbb3cfe5912c71cdce1c2c6bbd9c5d1",
+                "sha256:46c99d2de99945ec5cb54f23c8cd5689f6d7177305ebff350a58ce5f8de1669e",
+                "sha256:500d4957e52ddc3351cabf489e79c91c17f6e0899158447047588650b5e69183",
+                "sha256:535f6fc4d397c1563d08b88e485c3496cf5784e927af890fb3c3aac7f933ec66",
+                "sha256:596510de112c685489095da617b5bcbbac7dd6384aeebeda4df6025d0256a81b",
+                "sha256:62fe6c95e3ec8a7fad637b7f3d372c15ec1caa01ab47926cfdf7a75b40e0eac1",
+                "sha256:6788b695d50a51edb699cb55e35487e430fa21f1ed838122d722e0ff0ac5ba15",
+                "sha256:6dd73240d2af64df90aa7c4e7481e23825ea70af4b4922f8ede5b9e35f78a3b1",
+                "sha256:717ba8fe3ae9cc0006d7c451f0bb265ee07739daf76355d06366154ee68d221e",
+                "sha256:79855e1c5b8da654cf486b830bd42c06e8780cea587384cf6545b7d9ac013a0b",
+                "sha256:7c1699dfe0cf8ff607dbdcc1e9b9af1755371f92a68f706051cc8c37d447c905",
+                "sha256:88e5fcfb52ee7b911e8bb6d6aa2fd21fbecc674eadd44118a9cc3863f938e735",
+                "sha256:8defac2f2ccd6805ebf65f5eeb132adcf2ab57aa11fdf4c0dd5169a004710e7d",
+                "sha256:98c7086708b163d425c67c7a91bad6e466bb99d797aa64f965e9d25c12111a5e",
+                "sha256:9add70b36c5666a2ed02b43b335fe19002ee5235efd4b8a89bfcf9005bebac0d",
+                "sha256:9bf40443012702a1d2070043cb6291650a0841ece432556f784f004937f0f32c",
+                "sha256:ade5e387d2ad0d7ebf59146cc00c8044acbd863725f887353a10df825fc8ae21",
+                "sha256:b00c1de48212e4cc9603895652c5c410df699856a2853135b3967591e4beebc2",
+                "sha256:b1282f8c00509d99fef04d8ba936b156d419be841854fe901d8ae224c59f0be5",
+                "sha256:b2051432115498d3562c084a49bba65d97cf251f5a331c64a12ee7e04dacc51b",
+                "sha256:ba59edeaa2fc6114428f1637ffff42da1e311e29382d81b339c1817d37ec93c6",
+                "sha256:c8716a48d94b06bb3b2524c2b77e055fb313aeb4ea620c8dd03a105574ba704f",
+                "sha256:cd5df75523866410809ca100dc9681e301e3c27567cf498077e8551b6d20e42f",
+                "sha256:cdb132fc825c38e1aeec2c8aa9338310d29d337bebbd7baa06889d09a60a1fa2",
+                "sha256:e249096428b3ae81b08327a63a485ad0878de3fb939049038579ac0ef61e17e7",
+                "sha256:e8313f01ba26fbbe36c7be1966a7b7424942f670f38e666995b88d012765b9be"
+            ],
+            "version": "==1.1.1"
         },
         "mccabe": {
             "hashes": [
@@ -168,27 +193,31 @@
         },
         "requests": {
             "hashes": [
-                "sha256:99dcfdaaeb17caf6e526f32b6a7b780461512ab3f1d992187801694cba42770c",
-                "sha256:a84b8c9ab6239b578f22d1c21d51b696dcfe004032bb80ea832398d6909d7279"
+                "sha256:11e007a8a2aa0323f5a921e9e6a2d7e4e67d9877e85773fba9ba6419025cbeb4",
+                "sha256:9cf5292fcd0f598c671cfc1e0d7d1a7f13bb8085e9a590f48c010551dc6c4b31"
             ],
-            "version": "==2.20.0"
+            "version": "==2.22.0"
         },
         "simplejson": {
             "hashes": [
-                "sha256:067a7177ddfa32e1483ba5169ebea1bc2ea27f224853211ca669325648ca5642",
-                "sha256:2fc546e6af49fb45b93bbe878dea4c48edc34083729c0abd09981fe55bdf7f91",
-                "sha256:354fa32b02885e6dae925f1b5bbf842c333c1e11ea5453ddd67309dc31fdb40a",
-                "sha256:37e685986cf6f8144607f90340cff72d36acf654f3653a6c47b84c5c38d00df7",
-                "sha256:3af610ee72efbe644e19d5eaad575c73fb83026192114e5f6719f4901097fce2",
-                "sha256:3b919fc9cf508f13b929a9b274c40786036b31ad28657819b3b9ba44ba651f50",
-                "sha256:3dd289368bbd064974d9a5961101f080e939cbe051e6689a193c99fb6e9ac89b",
-                "sha256:6c3258ffff58712818a233b9737fe4be943d306c40cf63d14ddc82ba563f483a",
-                "sha256:75e3f0b12c28945c08f54350d91e624f8dd580ab74fd4f1bbea54bc6b0165610",
-                "sha256:b1f329139ba647a9548aa05fb95d046b4a677643070dc2afc05fa2e975d09ca5",
-                "sha256:ee9625fc8ee164902dfbb0ff932b26df112da9f871c32f0f9c1bcf20c350fe2a",
-                "sha256:fb2530b53c28f0d4d84990e945c2ebb470edb469d63e389bf02ff409012fe7c5"
-            ],
-            "version": "==3.16.0"
+                "sha256:0fe3994207485efb63d8f10a833ff31236ed27e3b23dadd0bf51c9900313f8f2",
+                "sha256:17163e643dbf125bb552de17c826b0161c68c970335d270e174363d19e7ea882",
+                "sha256:1d1e929cdd15151f3c0b2efe953b3281b2fd5ad5f234f77aca725f28486466f6",
+                "sha256:1ea59f570b9d4916ae5540a9181f9c978e16863383738b69a70363bc5e63c4cb",
+                "sha256:22a7acb81968a7c64eba7526af2cf566e7e2ded1cb5c83f0906b17ff1540f866",
+                "sha256:2b4b2b738b3b99819a17feaf118265d0753d5536049ea570b3c43b51c4701e81",
+                "sha256:4cf91aab51b02b3327c9d51897960c554f00891f9b31abd8a2f50fd4a0071ce8",
+                "sha256:7cce4bac7e0d66f3a080b80212c2238e063211fe327f98d764c6acbc214497fc",
+                "sha256:8027bd5f1e633eb61b8239994e6fc3aba0346e76294beac22a892eb8faa92ba1",
+                "sha256:86afc5b5cbd42d706efd33f280fec7bd7e2772ef54e3f34cf6b30777cd19a614",
+                "sha256:87d349517b572964350cc1adc5a31b493bbcee284505e81637d0174b2758ba17",
+                "sha256:926bcbef9eb60e798eabda9cd0bbcb0fca70d2779aa0aa56845749d973eb7ad5",
+                "sha256:9a126c3a91df5b1403e965ba63b304a50b53d8efc908a8c71545ed72535374a3",
+                "sha256:daaf4d11db982791be74b23ff4729af2c7da79316de0bebf880fa2d60bcc8c5a",
+                "sha256:fc046afda0ed8f5295212068266c92991ab1f4a50c6a7144b69364bdee4a0159",
+                "sha256:fc9051d249dd5512e541f20330a74592f7a65b2d62e18122ca89bf71f94db748"
+            ],
+            "version": "==3.17.0"
         },
         "six": {
             "hashes": [
@@ -198,6 +227,13 @@
             "index": "pypi",
             "version": "==1.11.0"
         },
+        "sqlparse": {
+            "hashes": [
+                "sha256:40afe6b8d4b1117e7dff5504d7a8ce07d9a1b15aeeade8a2d10f130a834f8177",
+                "sha256:7c3dca29c022744e95b547e867cee89f4fce4373f3549ccd8797d8eb52cdb873"
+            ],
+            "version": "==0.3.0"
+        },
         "typed-ast": {
             "hashes": [
                 "sha256:0948004fa228ae071054f5208840a1e88747a357ec1101c17217bfe99b299d58",
@@ -229,18 +265,17 @@
         },
         "uritemplate": {
             "hashes": [
-                "sha256:01c69f4fe8ed503b2951bef85d996a9d22434d2431584b5b107b2981ff416fbd",
-                "sha256:1b9c467a940ce9fb9f50df819e8ddd14696f89b9a8cc87ac77952ba416e0a8fd",
-                "sha256:c02643cebe23fc8adb5e6becffe201185bf06c40bda5c0b4028a93f1527d011d"
+                "sha256:07620c3f3f8eed1f12600845892b0e036a2420acf513c53f7de0abd911a5894f",
+                "sha256:5af8ad10cec94f215e3f48112de2022e1d5a37ed427fbd88652fa908f2ab7cae"
             ],
-            "version": "==3.0.0"
+            "version": "==3.0.1"
         },
         "urllib3": {
             "hashes": [
-                "sha256:61bf29cada3fc2fbefad4fdf059ea4bd1b4a86d2b6d15e1c7c0b582b9752fe39",
-                "sha256:de9529817c93f27c8ccbfead6985011db27bd0ddfcdb2d86f3f663385c6a9c22"
+                "sha256:2f3db8b19923a873b3e5256dc9c2dedfa883e33d87c690d9c7913e1f40673cdc",
+                "sha256:87716c2d2a7121198ebcb7ce7cccf6ce5e9ba539041cfbaeecfb641dc0bf6acc"
             ],
-            "version": "==1.24.1"
+            "version": "==1.25.8"
         },
         "wrapt": {
             "hashes": [
@@ -251,6 +286,13 @@
         }
     },
     "develop": {
+        "asgiref": {
+            "hashes": [
+                "sha256:7e06d934a7718bf3975acbf87780ba678957b87c7adc056f13b6215d610695a0",
+                "sha256:ea448f92fc35a0ef4b1508f53a04c4670255a3f33d22a81c8fc9c872036adbe5"
+            ],
+            "version": "==3.2.3"
+        },
         "astroid": {
             "hashes": [
                 "sha256:292fa429e69d60e4161e7612cb7cc8fa3609e2e309f80c224d93a76d5e7b58be",
@@ -268,11 +310,11 @@
         },
         "django": {
             "hashes": [
-                "sha256:acdcc1f61fdb0a0c82a1d3bf1879a414e7732ea894a7632af7f6d66ec7ab5bb3",
-                "sha256:efbcad7ebb47daafbcead109b38a5bd519a3c3cd92c6ed0f691ff97fcdd16b45"
+                "sha256:1226168be1b1c7efd0e66ee79b0e0b58b2caa7ed87717909cd8a57bb13a7079a",
+                "sha256:9a4635813e2d498a3c01b10c701fe4a515d76dd290aaa792ccb65ca4ccb6b038"
             ],
             "index": "pypi",
-            "version": "==2.1.2"
+            "version": "==2.2.10"
         },
         "django-extensions": {
             "hashes": [
@@ -367,10 +409,10 @@
         },
         "pyparsing": {
             "hashes": [
-                "sha256:40856e74d4987de5d01761a22d1621ae1c7f8774585acae358aa5c5936c6c90b",
-                "sha256:f353aab21fd474459d97b709e527b5571314ee5f067441dc9f88e33eecd96592"
+                "sha256:4c830582a84fb022400b85429791bc551f1f4871c33f23e44f353119e92f969f",
+                "sha256:c342dccb5250c08d45fd6f8b4a559613ca603b57498511740e65cd11a2e7dcec"
             ],
-            "version": "==2.3.0"
+            "version": "==2.4.6"
         },
         "pytz": {
             "hashes": [
@@ -388,6 +430,13 @@
             "index": "pypi",
             "version": "==1.11.0"
         },
+        "sqlparse": {
+            "hashes": [
+                "sha256:40afe6b8d4b1117e7dff5504d7a8ce07d9a1b15aeeade8a2d10f130a834f8177",
+                "sha256:7c3dca29c022744e95b547e867cee89f4fce4373f3549ccd8797d8eb52cdb873"
+            ],
+            "version": "==0.3.0"
+        },
         "typed-ast": {
             "hashes": [
                 "sha256:0948004fa228ae071054f5208840a1e88747a357ec1101c17217bfe99b299d58",