as3 parser resolves in 2 steps now.
builder caches and reuses parsecontroller
added content proposals for imports (only asdoc for now)
moved some helper methods to util class
hover helper presents real asdoc for resolved imports.
added hyper link detector implemetation that can handle string ids
and will find and open the asdoc resources
as3 node locator was not used updated implementation
as3 message handler got a dirty hack to correct the annotation region.
reference resolver trimmed down for now.
label provider offers images for ast classes now.