Merge branch 'settings-refactor' into shigusegubu

* settings-refactor:
  removed unused thing
  Replaced most trivial checkboxes with Checkbox component
  replace checkboxes in user-settings with Checkbox component
  Fix tests, more replacing with mergedConfig
  fixed default values for multi-choice configurations, should also fix warnings
  Removed all whole mess of manual watch/data declaration, now fully automatic
  created mergedConfig getter to avoid obnoxious checks for undefined everywhere

test/unit/specs/components/emoji_input.spec.js

@@ -12,8 +12,8 @@ const generateInput = (value, padEmoji = true) => {
     },
     mocks: {
       $store: {
-        state: {
-          config: {
+        getters: {
+          mergedConfig: {
             padEmoji
           }
         }

test/unit/specs/components/user_profile.spec.js

@@ -18,7 +18,14 @@ const actions = {
 }
 
 const testGetters = {
-  findUser: state => getters.findUser(state.users)
+  findUser: state => getters.findUser(state.users),
+  mergedConfig: state => ({
+    colors: '',
+    highlight: {},
+    customTheme: {
+      colors: []
+    }
+  })
 }
 
 const localUser = {
@@ -45,13 +52,6 @@ const externalProfileStore = new Vuex.Store({
     interface: {
       browserSupport: ''
     },
-    config: {
-      colors: '',
-      highlight: {},
-      customTheme: {
-        colors: []
-      }
-    },
     instance: {
       hideUserStats: true
     },