Test change for commit
Change submit button to green instead of orange

Test to change submit button to green instead of orange (cannot see
this locally despite running compass watch). I added definitions of the
variables $btn-green and then tried to use them instead.
Merge branch 'master' into ngs-style-changes
Reverting changes from bd0a11c949 [#58098582]

Scope here is just HAS styles, so we needn't touch mw-styles.

https://www.pivotaltracker.com/story/show/58098582
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