Merge pull request #39 from robinbattle/master

Friends' Event list on Profile page + follow self check
Added logic for public profile template: do not show follow button on user's own profile
Added logic: redirect user back to index if visiting a non-existent public profile page
Raised Http404 if either of the friendship participants is non-existent
Migrated message data structure to notification app
Added save event link in homepage template
Cleaned up styling for event bookmarking
Added opacity change for event bookmarking
Added event bookmarking to all event associated pages
Added basic framework for event edit
Hooked up template for event edit
Cleaned up tag initialization function
Migrated tag init to mgmt backend
Finished most of event edit besides existing tags not showing up
Fixed image preloader, added styles
date picker and date format on frontend