Closes#4088
- Fix Flexbox issue with the user list
- Fix positioning issue with the mobile menu toggle icon
- Make the mobile settings nav use absolute positioning (as fixed elements don't move inside a `transform: translate(...);` parent
Closes#4032
- Created "mobile" views: `parent-view`, `content-view` and `index-view`
- `mobile/parent-view` has three callbacks for managing layout, and a mediaQuery listener to keep in sync with the user
- content-view and index-view use their parent-views callbacks to bring themselves into and out of the viewport as appropriate
- fixed media queries for post content list from 800px to 900px
- Created `mobile-index-route` to intelligently transition to a new route on desktops (used by both PostsIndexRoute and SettingsIndexRoute)
- Extract mobile interactions from settings views to new mobile utility views
- `js-` prefixed settings view transitions
- removed unused openEditor action from PostsRoute
- removed unused mobile util "responsiveAction"
References #3810
- Re-adds the icons for each item of the settings nav and related styles
I've opted to go with adding `.icon-users` classes instead of setting them in the Sass.
References #3810, #3944
- Fixes several small visual bugs with the user settings page
- Changes `.settings-subview-header` to use a clearfix instead of `overflow: hidden;` (fixing style issues in #3944)
No issue
- Corrects the syntax used for the floating header gradient so it now gets prefixed correctly for Firefox
- Removes padding from `<button>` elements (fixes padding around images in buttons)
- Adds display: block; to settings images to prevent a Webkit bug which adds space under the image
