Added contextMenus permission
Added "Delete" command to context menu

-Add context menu entries at start up
-Manages context menu command, currently only "Delete"
-Sends bookmark refresh signal to active tab
-Above method allows smooth multiplacement operation
Deleted unused code
Added missing refresh bookmark signal
Added right click support for delete

-Added AngularJS mod to use ng-right-click in widget.html
-Added "setCurrent" command to launch on link right click and send
current bookmark select to background.js
-Added event listener for bookmark refresh signal
Added ng-right-click command

-Added name to ng-app to allow the addition of custom right click
trigger
-Added ng-right-click to trigger setCurrent