Cache usfirst session_keys between requests, hopefully nearly halves the number of calls we have to make to FIRST.

Need to monitor that FIRST requests that require session_keys continue to work. Existing error logging should catch things.

Tested with paver test, tests that fetch from FIRST still work, although none properly exercise the caching being local.
More hooks to add videos. Fixes #483
Tweaks to Team Details.

Adds links to FRC Megaphone. Fixes #484
Make some headers smaller to be more phone friendly.
Remove unused robot photo code.
Add icon to Hashtags.

Tested by visiting /team/177 locally, seeing changes.
Adds images from jquery-ui.1.8.13. Fixes #474
Add tests for 2013 match results and incomplete match results. Fixes #470
Adds test data. Sigh.
Better way to parse excellence in engineering award
Merge remote-tracking branch 'upstream/master'
Give some padding to the end of event.now. fixes #487
Cron job for event awards. fixes #488
FIx parsing of qual matches. Fixes #497
Add test data for 2013cama