Fixes Null References Error from ASCompletion.Context.ASContext->GetCachedFileModel() if ASCompletion.Context.ASContext->classPath == null
Fixes Null References Error from ASCompletion.Context.ASContext->GetCurrentFileModel() if ASCompletion.Context.ASContext->CurSciControl == null
small refactoring...
fix typo...
Merge pull request #433 from SlavaRa/fixes-ASCompletion.Context.ASContext

Fixes Null References Error and small refactoring
Merge branch 'master' into tests