Bug 1014605 - [Browser][V2.0] Cannot add a RTSP shortcut on homescreen

* Add rtsp url support in the manifest.webapp of the bookmark app.
Bug 1058419 - [Devices][Storage][Flame] SD card is an option for default media location when no SD card inserted
Merge pull request #24203 from begeeben/1014605_cannot_add_a_rtsp_shortcut

Bug 1014605 - [Browser][V2.0] Cannot add a RTSP shortcut on homescreen, r=crdlc
Merge pull request #23881 from ian-liu/settings/bug1058419_can_change_default_storage_to_sdcard_while_no_card_in_slot

Bug 1058419 - [Devices][Storage][Flame] SD card is an option for default media location when no SD card inserted, r=ej