Rework LibGroupTalents now also returns function returns additionally, add Spec Role triggers to load/generic/bt2, fix WeakAuras.GetRegion

- **WeakAuras.SpecForUnit(unit)** = Returns: `classFileName..spec`, `Dominant Tree`, `spent1`, `spent2`, `spent3`
- **WeakAuras.GetUnitRole(unit)** = Returns one of: `"melee"`, `"caster"`, `"healer"`, `"tank"`
- **WeakAuras.SpecRolePositionForUnit(unit)** = Returns: `Dominant Tree`, `spent1`, `spent2`, `spent3`
- **WeakAuras.CheckTalentForUnit(unit, talentId)** = Returns: `"Points spent"` in talent or `nil`
- **WeakAuras.CheckGlyphForUnit(unit, glyphId)** = Returns: `true` if the player has the glyph associated with `spellID` or `spellName`, we can only see the glyphs of players running `LibGroupTalents-1.0`

WeakAurasOptions/RegionOptions/Icon.lua

@@ -249,11 +249,6 @@ local function createOptions(id, data)
       desc = "|TInterface\\AddOns\\WeakAuras\\Media\\Textures\\edge-example:30|t\n"..L["Enable \"Edge\" part of the overlay"],
       hidden = function() return not data.cooldown end,
     },
-    endHeader = {
-      type = "header",
-      order = 100,
-      name = "",
-    },
     ccWarning = {
       type = "description",
       width = WeakAuras.doubleWidth,
@@ -269,6 +264,11 @@ local function createOptions(id, data)
       order = 11.7,
       hidden = function() return data.cooldownTextDisabled end
     },
+    endHeader = {
+      type = "header",
+      order = 100,
+      name = "",
+    },
   };
 
   return {