Remove xmlns:android, fix plugin id
Fix require paths that were broken by plugin id changes
[CB-4033] Relaxed case-sensitivity of "UTF-8".

FileReader.readAsText previously did not accept, for example, "utf-8".
[CB-3720] [BlackBerry10] Add BB10 File implementation

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