Re-genned annotations and the erd.
[DELETION] removed Ember.js assets.
Removed groups and group_links.
[DELETION] removed Role.
[DELETION] removed Posts.
Re-genned annotation and erd.
[DELETION] removed Contents.
Updated structure and annotation.
[DELETION] removed SearchLogs
[DELETION] removed MailingList.
Removed sign-in link from the bottom of the footer.
Fixed handling guest user and the feature options.
Cleaned up some quotation marks and removed dead helpers.
updated annotations and erd.