Helios: removes unused HLDebuggerModel>>initializeFromContext:
Helios debugger uses ASTDebugger
Fixes inlining of #ifNil: and #ifNotNil:

The $receiver internal variable was not declared
Fixes #923
Helios: Fixes a typo in HLManager
Fixes HLInspectorDisplayWidget >> selection
recompiles all files

fixes #921