Rename table admin_lectures to lectures to satisfy Lecture.all method
Manage user roles with cancan gem
Merge branch 'feature/test-and-production-database' into develop
User abilities for other user and lecture #1
Fix ensure admin presence
Lecture identification based on uuid
Migration fixes:
* Rails 4 supports uuid column type: fix migrations and rename columns
 - fix migrations
 - rename columns
 - fix paths
 - fix ensure_uuid methods
* Clean migrations
 - remove unnesseccary rename migration
 - needs database recreation
Ability for user to participate in lecture
Merge branch 'develop' of github.com:sptq/Vhagar into develop

Conflicts:
	app/controllers/admin/users_controller.rb
	app/views/admin/users/index.html
Merge branch 'feature/user-attend-lecture' into develop
Merge pull request #21 from vircung/develop

Fix Lecture resource