feat: editor preview scroll sync + preview styling fixes

client/app.js

@@ -14,6 +14,7 @@ import { createApolloFetch } from 'apollo-fetch'
 import { BatchHttpLink } from 'apollo-link-batch-http'
 import { InMemoryCache } from 'apollo-cache-inmemory'
 import Vuetify from 'vuetify'
+import Velocity from 'velocity-animate'
 import Hammer from 'hammerjs'
 import store from './store'
 
@@ -95,6 +96,8 @@ Vue.use(VeeValidate, {
 })
 Vue.use(Vuetify)
 
+Vue.prototype.Velocity = Velocity
+
 // ====================================
 // Register Vue Components
 // ====================================