Remove /# from URLs

Was scratching my head over the odd hash signs in Habit's URLs, and found this how-to on fixing them: http://stackoverflow.com/questions/14771091/removing-the-symbol-from-angular-js-urls

It's known to cause headaches with Internet Explorer versions lower than 10, so if we have a lot of users on that browser base, this might need some additional handling to fall back on the old behavior in that scenario.

Not yet tested!