BetterRaidFrames

Code optimizing, woot, so much fun. 

- More changes to ready checks. The code for this should now only be fired when actually required. This should provide additional performance improvements during ready checks. As a result - by default everyone will now have the "not ready" icon, which will switch to the "Ready" icon when you click ready.
- Removed some unnecessary code that could cause some performance issues
- Changed the main updater to a timer. This should provide a very clear and hopefully noticeable performance boost. Previously, everything was updated every 4 frames - this has now been changed to every 0.2 seconds. I'm still playing around with the ideal timing so may change this later.

Now I would mark this a beta release since I'm not sure if the timer change causes additional issues, however no one uses beta release so marking it as release. It seemed to work when I tested it but it may still be a little bit buggy. So please leave feedback (even if it's only good feedback) :)