fix : add gettext angular dependency + add module path option for requirejs

[davidostermann]

I try to add have the possibility to have angular-gettext as a requirejs dependency. I don't think it's a good idea to have angular as requirejs dependency and angular-gettext as a classic script embed. In general, it should not be a requirement to have angular as requirejs dependencies. I tried to change the test in this way but I failed to get the test working without the angular dependency. I also need the possibility to add an explicite name to the created requirejs module.

[gabegorelick]

What problem is this attempting to solve? Also, we can't merge this if it's breaking tests. Thanks.