Multiple changes to forum controllers
Multiple changes to forum controllers

* Adding route with encoded titles for discussion page
* Displaying some basic info in discussion page to see whether stuff works
* Adding infinite scroll to discussion listing
* Adding guards to discussion listing controller scope vars (useful for testing, when we ever do that)

AnhNhan/Converge,AnhNhan/Converge,AnhNhan/Converge,AnhNhan/Converge