Fix: Should require jQuery Mobile

[taneltm]

If jQuery Mobile is not specified as a dependency and RequireJS loads scripts via HTTP asynchronously, NativeDroid2 script could start running before jQuery Mobile is ready.

This could result in:

Uncaught TypeError: $.widget is not a function
  at nativedroid2.js:38

In our case an optimized RequireJS build worked, but an unoptimized build did not.

Also fixed the comments.