Bug 830644 - [Bluetooth][Hidpi]Support high resolution devices
Merge pull request #8871 from rexboy7/hd-bluetooth

Bug 830644 - [Bluetooth][Hidpi]Support high resolution devices
Bug 854413 - [MMS][SMS] Move all DOM element property initialization into init methods r=julienw

- Disambiguate element ids for threads and messages
- Move all DOM element property initialization into init methods
- Fix impossible race condition: ThreadListUI elements _CANNOT_ be accessed before they are actually initialized.
- Fixes two misnaming; Fixes ill-advised refactoring; Further renaming of renamed things.
- Update element property "noResultsReturned" => "noResults" (to match element id "[…-]no-results")
- Don't create element properties that aren't used ie. 'header-container'

Signed-off-by: Rick Waldron <waldron.rick@gmail.com>