[#157] PropertyGetter: GetValue - up target checking
[#156] TextLogOpeRTAOR
Sub viewModel injection bug fix
Move system log collector identifier into special file
[#167] Support master view models
Rename Contant ot ConStant
[#166] Support GetConstantValueOrDefault method for Config manager
#164 Create use method in Sigleton to use singleton inside
#165 Support system log collector
[#7] Error occuring when ViewModel has protected virtual property