Cataclysm: Stat and system changes for resto shaman

Here's the list of things we need to be aware of:
- MP/5: Gone
- Spirit: Now the regen stat of choice for all healers, gear with spirit is specifically healer gear.
- Spell Power: Gone from all items except for weapons, marking specific weapons as caster items.
- Intellect : Spell power is now derived from intellect, making this stat very important
- Haste: Still around.
- Critical Strike Rating: Still around.
- Spell Ranks: Gone, Spells will now grow with you as you level. Levels at which you can learn spells will be changing.
- Mastery: This is a specialization stat found on gear. Mastery allows for you to be better at your defined role
- Existing gear: Your existing gear will be updated to fall in line with these changes before Cataclysm is released





