Change supported version of ruby
Replace the rest of the deprecated `{{action xyz}}` with `{{action
"xyz"}}`
Merge pull request #2843 from zconnelly13/change_supported_version_of_ruby

Change supported version of ruby
FIX: Could sometimes open two category drop downs at once.
FIX: mobile layout was too wide
FIX: broken external auth
UX: drop text from loading spinner, make bigger
fix avatar expanded topic map height