Move `common_vue` into vendor bundle

app/assets/javascripts/commons/index.js

@@ -2,3 +2,4 @@ import 'underscore';
 import './polyfills';
 import './jquery';
 import './bootstrap';
+import './vue';

app/assets/javascripts/vue_shared/common_vue.js → app/assets/javascripts/commons/vue.js

 import Vue from 'vue';
-import './vue_resource_interceptor';
 
 if (process.env.NODE_ENV !== 'production') {
   Vue.config.productionTip = false;

config/webpack.config.js

@@ -30,7 +30,7 @@ var config = {
     blob:                 './blob_edit/blob_bundle.js',
     boards:               './boards/boards_bundle.js',
     common:               './commons/index.js',
-    common_vue:           ['vue', './vue_shared/common_vue.js'],
+    common_vue:           './vue_shared/vue_resource_interceptor.js',
     common_d3:            ['d3'],
     cycle_analytics:      './cycle_analytics/cycle_analytics_bundle.js',
     commit_pipelines:     './commit/pipelines/pipelines_bundle.js',