Weapon Imbues Shaman

We didn't feel that Weapon Imbues were offering much in the way of gameplay. For many players, they felt like more of an annoyance ("why can't I Unleash... oh") than a buff. They're also prime targets for reducing action bar clutter. For those reasons, we decided to convert each spec's primary imbue(s) to passive effects.

However, while the effects of Windfury and Flametongue are a core part of the Enhancement rotation, Earthliving for Restoration and Flametongue for Elemental are little more than a raw numbers increase. Not really something that we need to clutter up the spellbook with. So, for Resto and Elemental, we decided to remove those effects entirely (and compensate for that when we start numbers tuning). For Enhancement, we merged Windfury and Flametongue into one passive (Enhanced Weapons) that gives the benefits of both effects.

Please be aware that the currently active Alpha build was taken in the middle of a pretty big wave of class changes (for everyone, not just Shaman). We'll be getting a full update to the patch notes out as soon as possible once we've completed that round of changes.

One extra thing I forgot to mention that goes along with this change: Unleash Elements is being split into three different spells, unique to each spec: Unleash Life for Restoration, Unleash Flame for Elemental, and Unleash Elements for Enhancement. Each of those spells acts as Unleash Elements currently does with spec-appropriate imbues active.