* Styles CodeMirror Search box
* Switch to fork of search add-on
* Styles search box using custom markup
* Prev/Next search behaviour, highlighting current result
* Hide search modifiers until implemented
* Regexp search
* Style RegExp modifier button active state
* Styles search modifiers
* Wires up Case Sensitive search button
* Allows case insenstive regexp search
* Do not show underlying regexp query string when re-opening dialog
* Adds "Whole word" search
* Adds title and aria-label for tooltip and screenreaders
* Whole Word button shows correct active/inactive state
* Disables replace implementation which doesn't work
* Tidies up query parsing so it's less of a hack
- uses state to convert query text into a regexp
- avoids having to fake regexp using "/.../" syntax
- parsing is now in one place
* Uses shared metaKey function for Cmd/Ctrl key
* Adds find function to keyboard shortcuts modals
* Sets aria-checked to true/false to indicate button state
* Sets role=checkbox on checkbox-like buttons
