Merge pull request #68 from jonsimington/develop

Add title to pages that need it and fix up error pages
Merge pull request #69 from jonsimington/develop

hide sidebar when user is authenticated
Merge pull request #70 from jonsimington/develop

Fix more bootstrap 3 styling
Merge pull request #73 from jonsimington/develop

Update CDN links for Yeti, Bootstrap, FontAwesome, and Less
Update navbar menus to trigger on hover
Add links to dropdown css in base.html, error_base.html