Switch to Mongoid session store

Rather than cookies. An upgrade to rack-cas for Mongoid 4 compatibility
was required to make this work.
WCMS-192 Added the ability on the bio to choose whether a faculty member is emeritus, full time or adjunct. This is reliant on buweb v0.35.0
Move strong params over to their respective policies.
fix spelling mistakes
gem version bump
made suggested changes
Merge pull request #89 from biola/faculty_status

Faculty status added to bio edit page
Merge pull request #87 from biola/rack-cas-sessions

Switch to Mongoid session store
Allow custom HTML in menu_block.

This will allow custom HTML to be interspersed between add_item
calls in the menu_block helper.
Merge pull request #91 from biola/menu_block_html

Allow custom HTML in menu_block.
Merge branch 'master' into add_link_to_remove_bio

Conflicts:
	Gemfile.lock
	app/policies/bio_edition_policy.rb