Bug 1054943 - Update button css for action menu
Bug 1056514 - Make Keyboard-Symbols font file a system font file and cached
Bug 1035619 : [Keyboard] Search input type to use search icon on Enter key
Bug 1047143 - close aps entering task-manager, exitToApp to open/restore

* Fix assumption that home event means homescreen opens in SoundManager,
* Remove appwillopen handler in AttentionScreen, applaunch will suffice
* Also listen for search app's requestforeground event
Merge pull request #23332 from sfoster/close-apps-task-manager-bug-1047143

Bug 1047143 - close aps entering task-manager, exitToApp to open/restore. r=alive
Merge pull request #23136 from mnjul/bug_1056514_keyboard_symbols_font

Bug 1056514 - Make Keyboard-Symbols font file a system font file and cached. r=timdream,alivedise,yuren. f=mwu
Bug 1053613 - Lockscreen PIN keypad: backspace key misaligned & wrong, vertical separators missing, last row too high
Merge pull request #23255 from shamenchens/Bug1054943-ActionMenuButton

Bug 1054943 - Update button css for action menu, r=alive
Merge pull request #23196 from mnjul/bug_1035619_keyboard_search_enter_icon

Bug 1035619 : [Keyboard] Search input type to use search icon on Enter key. r=rudyl
Merge pull request #22879 from mnjul/bug_1053613_lockscreen_pin_bckspc_lastrow_vertical_separator

Bug 1053613 - Lockscreen PIN keypad: backspace key misaligned & wrong, vertical separators missing, last row too high. r=gweng