Merge pull request #24 from GraphalyzerPro/US#28Scrollbar

Us#28 scrollbar
OutputThreads(US#27)

Implemented ThreadViewModel, ProcessViewModel, IThreadViewModel, IProcessViewModel, IMethodExecutionViewModel.

Threads are shown in a sequence diagram analysis.
Merge pull request #26 from GraphalyzerPro/OutputThreads(US#27)

OutputThreads(US#27)