docs: remove reference of Ubuntu 16.04

Author: sileht

ISSUE_TEMPLATE.md

@@ -2,24 +2,26 @@
 
 Before creating a new issue, please make sure that:
 - [ ] the problem isn't already identified in the in the [FAQ page](http://www.deepdetect.com/overview/faq/ "DeepDetect FAQ page"),
-- [ ] your problem isn't listed in an existing issue ([open](https://github.com/beniz/deepdetect/issues) or [closed](https://github.com/beniz/deepdetect/issues?q=is%3Aissue+is%3Aclosed) one),
-- [ ] [all prerequisite tools](http://www.deepdetect.com/overview/installing/ "DeepDetect installation page") and [dependencies](https://github.com/beniz/deepdetect#user-content-dependencies "DeepDetect README page on Github") are installed.
+- [ ] your problem isn't listed in an existing issue ([open](https://github.com/jolibrain/deepdetect/issues) or [closed](https://github.com/jolibrain/deepdetect/issues?q=is%3Aissue+is%3Aclosed) one),
+- [ ] [all prerequisite tools](http://www.deepdetect.com/overview/installing/ "DeepDetect installation page") and [dependencies](https://github.com/jolibrain/deepdetect#user-content-dependencies "DeepDetect README page on Github") are installed.
 
 If Ok, please give as many details as possible to help us solve the problem more efficiently.
+
 #### Configuration
+
 - Version of DeepDetect:
     - [ ] Locally compiled on:
-        - [ ] Ubuntu 14.04 LTS
-        - [ ] Mac OSX
+        - [ ] Ubuntu 18.04 LTS
         - [ ] Other:
-    - [ ] Docker
+    - [ ] Docker CPU
+    - [ ] Docker GPU
     - [ ] Amazon AMI
 - Commit (shown by the server when starting):
 
 #### Your question / the problem you're facing:
 
 #### Error message (if any) / steps to reproduce the problem:
+
 - [ ] list of API calls:
 
 - [ ] Server log output:
-

README.md

@@ -47,7 +47,7 @@ Please join either the community on [Gitter](https://gitter.im/beniz/deepdetect)
 
 #### Supported Platforms
 
-The reference platforms with support are **Ubuntu 16.04 LTS** and **Ubuntu 18.04 LTS**.
+The reference platforms with support are **Ubuntu 18.04 LTS**.
 
 Supported images that come with pre-trained image classification deep (residual) neural nets:
 
@@ -240,7 +240,7 @@ DeepDetect is designed, implemented and supported by [Jolibrain](http://jolibrai
 
 Please refer to instructions here: https://www.deepdetect.com/quickstart-server/
 
-Below are instructions for Ubuntu 16.04 LTS and 18.04 LTS. For other Linux and Unix systems, steps may differ, CUDA, Caffe and other libraries may prove difficult to setup. If you are building on 16.04 LTS, look at https://github.com/jolibrain/deepdetect/issues/126 that tells you how to proceed.
+Below are instructions for 18.04 LTS. For other Linux and Unix systems, steps may differ, CUDA, Caffe and other libraries may prove difficult to setup.
 
 Beware of dependencies, typically on Debian/Ubuntu Linux, do:
 ```