Call Hierarchy partially working.
Use HaxeClass instead of AbstractHaxePsiClass in HaxeHierarchyUtils
Better detection of functions for call hierarchies.
Merge branch 'ClassHierarchy' into CallMenuItem
Make Type Hierarchy menu item bring up a type browser pane.
Merge branch 'ClassHierarchy' of https://github.com/tivo/intellij-haxe into ClassHierarchy