Change module name to lower camel case

According to tha angular style guide [1] modules should be in lower
camel case.

[1] https://github.com/mgechev/angularjs-style-guide#modules
Rename controllers & partials

- According to the Angular style guide[1] we should use Ctrl instead of
  Controller. Also, I like it better because it's shorter.
- Change AddMovie to MovieEditor.
- Change MovieDetail to MovieDisplay.
- Rename partials accordingly.

[1] https://github.com/mgechev/angularjs-style-guide#modules
Move controllers to other file

And sort them while at it.