Inject BB10 WebWorks script in bootstrap
Small refactor to injection of webworks.js

- changed to document.head
- added error handler and alert if things go south
[CB-2058] [iOS] 2 File API test failures on mobile-spec 2.3.0rc2

Clobber and then merge instead of the other way around.
iOS was depending on this ordering, and it makes more sense anyways.
Add initial File API support for BB10
Fixed lint error in BB10 file module and got rid of BlobBuilder use
Updating the version to 2.3.0
BlackBerry 10 InAppBrowser support

- added common InAppBrowser to qnx platform
- created InAppBrowser qnx plugin
- updated qnx manager to route to InAppBrowser plugin
- cleaned up some lint in common InAppBrowser plugin
- updated .jshintrc to know about the webworks global to interface with
  our custom plugin.

TODO: still doesn't really support local URLS (no special handling)