New: Tooling changes for UI

frontend/.eslintrc

@@ -209,7 +209,6 @@
     "lines-around-comment": ["error", { "beforeBlockComment": true, "afterBlockComment": false }],
     "max-depth": ["error", {"maximum": 5}],
     "max-nested-callbacks": ["error", 4],
-    "max-params": ["error", 6],
     "max-statements": "off",
     "max-statements-per-line": ["error", { "max": 1 }],
     "new-cap": ["error", {"capIsNewExceptions": ["$.Deferred", "DragDropContext", "DragLayer", "DragSource", "DropTarget"]}],

frontend/.stylelintrc

@@ -24,7 +24,7 @@
         "ignoreAtRules": [
           "/^add\\-mixin$/",
           "/^define\\-mixin$/"
-        ]
+        ] 
       }
     ],
     "at-rule-no-vendor-prefix": true,

frontend/postcss.config.js

@@ -14,6 +14,7 @@ module.exports = (ctx, configPath, options) => {
             return Object.assign(acc, reload(vars));
           }, {})
       },
+      'postcss-color-function': {},
       'postcss-nested': {},
       autoprefixer: {
         browsers: [