* Tweak limit order UI and fix button
* Style all follow/unfollow buttons blue
also get rid of highlight-blue button
* remove all other uses of 'btn'
* Style group follow button like user follow
* lint and format
* Fix freezing when typing big docs
* Make rich text fields autosave to localstorage
* Add autosave for comments
* delete vestigial text editor from challenges
* Clear autosave on submit post/market/comment
* lint
