Request to support the Druid class in Cataclysm.

🌠 Balance

• Omen of Clarity (unchanged)
• Nature's Grace (removed)
  • the effect lasts for way too long, is not reset on a specific cast, and doesn't really change the rotation
  • in Wrath, the effect was already debatable but could have its uses, in Cataclysm it would be just a fancy buff bar
• Lunar Eclipse (unchanged)
• Solar Eclipse (unchanged)
• Shooting Stars (new)
  • must display spell alert with Shooting Stars texture
  • must glow button of Starsurge

🐾 Feral

• Predatory Strikes (unchanged)
  • there are no new Nature spells that are not instant and with a base cast time less than 10 seconds
  • hence, there is no need to add glowing buttons (which is a good thing because the list is huge)

🍃 Restoration

• Fury of Stormrage (new)
  • must display spell alert with Fury of Stormrage texture
  • must glow button of Starfire

Implemented in #248.