grunt: use ngAnnotate (fixes #20)

This commit removes the existing dependency injection from the source
files -- it is then readded when we make a build.
controllers: wrap long lines

These were accidentally created when ng-annotate was run.
js: remove explicit dependency injection lists

NgAnnotate is smart enough to add the information later. As an
example, the ConfigService will be annotated like this in the
generated source:

  function ConfigService($http) { ... }
  ConfigService.$inject = ['$http'];

which is enough to let Angular know the dependencies at runtime.
Merge pull request #175 from mgeisler/ng-annotate

grunt: use ngAnnotate (fixes #20)