Auto-toggle other radio button if other email input is focused or typed in. Fixes bug #1050989.
Use super to pull in parent JS if it exists.
Fix scoping thing with js.
Fixed nits.
Because js.
Merge pull request #2663 from jezdez/github-select-other-onchange

Auto-toggle other radio button if other email input is focused or typed in. Fixes bug #1050989.