[CLC-1927] Create simple automated smoke test for deployments, from browser
CLC-2038 - General fixes for accessibility

Add role to footer
Update alt for multiple images
More descriptive links
Less verbose
Show/Hide text on the popovers
Text on the gear icon
Right focus
[CLC-1927] Front-end fixes
Merge pull request #1184 from yuhunglin/CLC-1927

[CLC-1927] Create simple automated smoke test for deployments, from browser
Merge pull request #1185 from christianv/CLC-2038

CLC-2038 - General fixes for accessibility
CLC-1971 Rename the Canvas user-specific course list proxy before adding system-wide Canvas course proxies
CLC-1971 Update My Classes dummy feed
CLC-1971 - Front-end - Show all classes
https://jira.media.berkeley.edu/jira/browse/CLC-1971
CLC-1844 Drop individual Canvas OAuth2 tokens
Canvas integration now effective for anyone with an account.