- Change preview icon to Font Awesome Regular instead of Solid
- Give the preview button a tooltip
- Change submit button icon to paper plane (shown on mobile)
- Tweak mobile header button touch target
- Scroll overflowing text editor controls horizontally
* Replace gulp with webpack and npm scripts for JS compilation
* Set up Travis CI to commit compiled JS
* Restructure `js` directory; only one instance of npm, forum/admin are "submodules"
* Refactor JS initializers into Application subclasses
* Maintain partial compatibility API (importing from absolute paths) for extensions
* Remove minification responsibility from PHP asset compiler
* Restructure `less` directory