Template loading issue

Hi @ddean4040,

A user was running into problems with both BP Follow and BP Group Hierarchy:
https://github.com/r-a-y/buddypress-followers/issues/38

I've found that the problem is due to BP Group Hierarchy initializing its template loading on all pages instead of just the group pages.  (See commit 8e20581.)

The rest of the commits are trivial stuff (warnings, whitespace).  Let me know what you think once you've taken a look!