Merge pull request #42 from mgbellaire/master

Closes #27 Archiving Sprints
Added sprint title to the individual sprint page
Bolded the sprint title on individual sprint pages
Added some typography styles
Changed text on button to 'Add Sprint"
Added background image
added class of 'sprints-list' to better style
added clearfix class
hiding bar unless user is signed in
working to highlight newly added item
Merge pull request #43 from bfodeke/master

hid banner when not logged in
Recent changes to the sprint page