War Within - Alpha+ Compatibility

[ljosberinn]

As explained on discord, this is as far as I got.

• [x] migrated APIs
• [x] addon loads and works for the largest part. no errors thrown
• [ ] click casting stopped working. it currently just doesn't do anything and I don't know where to dig further. no errors thrown
• [ ] range indicators are inconsistent. units are faded when clearly in range. they show in range when targeting any unit. no errors thrown
• [x] ButtonGlow_Stop is no longer a function
  • this is fixed by updating LibCustomGlow