Build: Add csslint and csscomb

Closes gh-8172

Author: arschmitz

.csscomb.json

@@ -0,0 +1,24 @@
+{
+    "remove-empty-rulesets": true,
+    "always-semicolon": true,
+    "color-case": "lower",
+    "block-indent": "\t",
+    "color-shorthand": true,
+    "element-case": "lower",
+    "eof-newline": true,
+    "leading-zero": false,
+    "quotes": "double",
+    "sort-order-fallback": "abc",
+    "space-before-colon": "",
+    "space-after-colon": " ",
+    "space-before-combinator": " ",
+    "space-after-combinator": " ",
+    "space-between-declarations": "\n",
+    "space-before-opening-brace": " ",
+    "space-after-opening-brace": "\n",
+    "space-after-selector-delimiter": "\n",
+    "space-before-selector-delimiter": "",
+    "space-before-closing-brace": "\n",
+    "strip-spaces": true,
+    "unitless-zero": true
+}

.csslintrc

@@ -0,0 +1,20 @@
+{
+	"adjoining-classes": false,
+	"box-model": false,
+	"box-sizing": false,
+	"compatible-vendor-prefixes": false,
+	"duplicate-background-images": false,
+	"import": false,
+	"important": false,
+	"outline-none": false,
+	"overqualified-elements": false,
+	"text-indent": false,
+
+	// These are not ideal but needed for current theme
+	"qualified-headings": false,
+	"regex-selectors": false,
+	"unqualified-attributes": false,
+	"universal-selector": false,
+	"unique-headings": false,
+	"vendor-prefix": false
+}

build/tasks/alias.js

@@ -30,6 +30,7 @@ grunt.registerTask( "build:js", [
 ] );
 grunt.registerTask( "build:css", [
 	"cssbuild",
+	"csslint",
 	"cssmin"
 ] );
 grunt.registerTask( "build:demos", [

build/tasks/options/csscomb.js

@@ -0,0 +1,11 @@
+module.exports = {
+	structure: {
+		options: {
+			config: ".csscomb.json"
+		},
+		files: [{
+            expand: true,
+            src: [ 'css/structure/*.css' ]
+        }]
+	}
+};

build/tasks/options/csslint.js

@@ -0,0 +1,6 @@
+module.exports = {
+	options: {
+		csslintrc: ".csslintrc"
+	},
+	src: [ "css/**/*.css" ]
+};

package.json

@@ -36,11 +36,13 @@
 		"grunt-contrib-concat": "0.3.0",
 		"grunt-contrib-connect": "0.3.0",
 		"grunt-contrib-copy": "0.4.1",
+		"grunt-contrib-csslint": "0.4.0",
 		"grunt-contrib-cssmin": "0.6.1",
 		"grunt-contrib-jshint": "0.6.3",
 		"grunt-contrib-requirejs": "0.4.1",
 		"grunt-contrib-uglify": "0.2.6",
 		"grunt-coveralls": "0.3.0",
+		"grunt-csscomb": "1.2.1",
 		"grunt-esformatter": "1.0.1",
 		"grunt-git-authors": "2.0.0",
 		"grunt-hash-manifest": "0.5.3",