Merge pull request #97 from bibinkg/master

About page Chrome positioning fixed and side-nav active links successfully completed. Pull request accepted. Thanks!
Fixed modal signin button wrapping
Replaced homepage experiments text with Percys requested edits, fixed bug where clicking side-nav in Chrome caused strange disappearing behavior
Removed stats and sorting by most active from experiments and competition pages
fixed missing px in main.css
Manually merging changes from bibinkg\'s commit Updates_UX_Making_Active_Topbar_08_23_2013
Showing filters and sort by on Experiments and Competitions page
First pass to make evaluation outputs available from the submission table
Login on the competition's Participate tab redirects to the same tab
Fix name of script for creating sample competitions
diff looks weird so investigating before pushing.
Removed commented SIG Spatial Competition code.
Styling active links in top-bar nav
Minor cleanup
Merge remote-tracking branch 'upstream/master'

Conflicts:
	codalab/apps/web/static/foundation/sass/_settings.scss
	codalab/apps/web/templates/web/competitions/index.html
	codalab/apps/web/templates/web/experiments/index.html
	codalab/apps/web/templates/web/help/about.html
Updates_Competition_Result_PhaseButtons_action

Attached event handler to phase buttons and given Ajax Function to load
the data .
Handled the Error message display and used Foundation 4 class for
formatting the error message.