* Clarify the meaning of the 'None' option; rename to 'No key'
* Clarify Auto-hide search popup
* Clarify Scan delay
* Move Support inputs for devices with touch screens; make advanced
* Separate material styles into a separate file
* Improve action button styles
* Rename --font-size-default to --font-size
* Remove px units
* Remove some material vars
* Fix some variable names
* Define variables
* Remove --shadow-vertical
* Revert name change
* Move var
* Rename var
* Update vars
* Remove redundant vars
* Update search styles
* Update styles
* Update colors
* Update variable names
* Include material.css on float.html page
* Improve styles for #content-scroll-focus
* Create new class to manage and control document focus
* Use new focus class
* Add a check to prevent redundant .blur calls
* Improve styles for settings-item-button
* Add hover/active styles to settings-item-button
* Use consistent phrasing for setting buttons and include ellipsis
* Make storage controller optional
* Make more elements optional
* Update styles
* Create new welcome page
* Update URL for welcome guide
* Remove old guide
* Fix unused global
