Merge schema
Added course-wide announcements
Authorize users before allowing changes to announcements
Fix a couple bugs with redirection to incorrect page and trying to display announcement where one isn't available
modify copy and hide actions th for students
textarea width and style for announcement views
Merge pull request #84 from grahamcracker/announcements

Announcements
order announcements and fix index link
basic course management with slide reveal
maintain state for opened/closed panels
correct reveal for document lists
back button, fix bug and redirects for management
fix redirect paths to go to course management
delete capsules/lectures and auth for management
Merge pull request #85 from grahamcracker/management-panel

Management panel
remove controls from student view
delete for topics and fix referral error
fix style and display permissions errors
redirect to announcements index after destroy
Merge branch 'dev'

Conflicts:
	app/views/layouts/home.html.erb