Added scrolling to teacher dashboard test

[epeach]

Added scrolling fixes browser size specific error where save button was off screen and couldn't be engaged.

[davidsbailey]

Nice find, @epeach ! It sounds like you've verified this fix locally, which seems good enough. In the future if you want to test in Firefox and other browsers on CircleCI, you can do so by including "[test all]" in your commit message.

[islemaster]

@davidsbailey that's not correct. [test all] will cause all unit tests to run, regardless of which files changed (where normally we try to only run suites that might have been affected).

You can enable UI tests for specific browsers with [test firefox], [test ie], [test safari], etc.

See what tags are available and what they do in circle.rake.

[davidsbailey]

Ah, good to know! Thanks @islemaster