Wrap PluginResult data in array

Reviewed by Jeffrey Heifetz <jheifetz@blackberry.com>
Tested by Tracy Li <tli@blackberry.com>
Fixed build error on linux

Revewied by Bryan Higgins <bhiggins@blackberry.com>
Updating cordova.blackberry10.js
Updated navigator.notification.prompt to return an empty string instead of null when no text is entered

Reviewed by Jeffrey Heifetz <jheifetz@blackberry.com>
Tested by Tracy Li <tli@blackberry.com>