Merge pull request #67 from moneyadviceservice/javascript

#4160: Moving javascript loading to the bottom of the page
Add fields to the contents table for core content.

Also validation.
Add fields to the content form to update core content.
Dummy display of core content in the article view.
Update precompiled assets.
Fix bug in carrierwave CDN config.
Add "Ma Says" module
add in button to display ma says snippet
Tweak copy relating to adding "Ma says" snippet to an article
Update assets