* appList integrates paging mechanism and selectionBorder
[System] Add prototype widget manager/widget window/widget factory
Merge pull request #10 from rexboy7/tv-widget-systemiac-onarch1

[System] Add prototype widget manager/widget window/widget factory
Keep unresponse request in array
Merge pull request #11 from dwi2/action_object_system

Keep unresponse request in array
add widget manager and link the system message
Merge pull request #12 from huchengtw-moz/luke-tv-arch1-widget-message

add widget manager and link the system message
* refactor applications.js
* add "install/update/uninstall" events in Application object