Merge pull request #1326 from raydavis/raywip

CLC-2241 Don't cache Canvas roster instructor check
Bump app version to v17
Merge pull request #1327 from ctweney/v17Bump

NOJIRA Bump app version to v17
CLC-2121 - Update 404 message with design from CLC-1025
https://jira.media.berkeley.edu/jira/browse/CLC-2121

Also

* Removed campanile image, since it's not used anymore
* Reorder CSS
* Fixes CLC-2200 - Lots of background images, e.g. the status popover, showing when screens load or are refreshed.
(It touches exactly the same lines of code)
Merge pull request #1328 from christianv/CLC-2121

CLC-2121 - Update 404 message with design from CLC-1025
CLC-2140 Change current term to Fall 2013
CLC-2049 - Tasks & Assignments: Add a label to the checkbox
https://jira.media.berkeley.edu/jira/browse/CLC-2049
CLC-1957 - Maintenance Page

https://jira.media.berkeley.edu/jira/browse/CLC-1957
Merge pull request #1330 from rhollow/CLC-1957

CLC-1957 - Maintenance Page
Merge pull request #1331 from christianv/CLC-2049

CLC-2049 - Tasks & Assignments: Add a label to the checkbox
Merge pull request #1329 from ctweney/clc-2140

CLC-2140 Change current term to Fall 2013
CLC-2250 Expire Bearfacts-derived data feeds at 8:00am; change HotPlate from a periodic background service to a scheduled job
CLC-2068 - Implement new design for splash page
https://jira.media.berkeley.edu/jira/browse/CLC-2068

Also fixes a subtask:
CLC-2238 - IMPLEMENT: Add "Beta" back to the CalCentral brand and Splash page
Merge pull request #1332 from christianv/CLC-2068

CLC-2068 - Implement new design for splash page
CLC-2160 - Make footer for mobile more legible
https://jira.media.berkeley.edu/jira/browse/CLC-2160

Since we had to modify some of the margin on the splash page, this also fixes:
CLC-1410 - [Front end] Reformat release note for mobile
CLC-2250 Fix expiration logic
Merge pull request #1333 from christianv/CLC-2160

CLC-2160 - Make footer for mobile more legible
CLC-2250 Clarifying comment
CLC-2236 - IMPLEMENT: when a user can't create an account because of new limits
https://jira.media.berkeley.edu/jira/browse/CLC-2236

Since the 404 and the "Sorry" page are so similar, I used the "Status page" CSS for both of them.
Makes everything more DRY and that's how we like it.
Merge pull request #1335 from christianv/CLC-2236

CLC-2236 - IMPLEMENT: when a user can't create an account because of new limits