fix cancan permission for forum
Fix forum category id
Hack patch for missing course id
Monkey patch for forum management
mark all as read
next unseen topic
unread post count at sidebar
Topics management
remove pg
next unread in forum view
Category subscription model and migration
mark all as read
Fix model creation for CategorySubscription
Reset schema version
Merge branch 'forum' of git://github.com/fuzzie360/coursemology.org into dev/raymoond_dev

Conflicts:
	Gemfile
	Gemfile.lock
	app/decorator/controllers/forem/admin/base_controller_decorator.rb
uncomment pg
Merge branch 'lessonbin' of git://github.com/fuzzie360/coursemology.org into dev/raymoond_dev
Merge branch 'forum-lessonbin' of git://github.com/fuzzie360/coursemology.org into dev/raymoond_dev

Conflicts:
	Gemfile
	Gemfile.lock
Forum new post notification process
Merge branch 'forum-lessonbin' of git://github.com/fuzzie360/coursemology.org into dev/raymoond_dev