add pageNumber, NarrativeNumberPerPage for filter,
Merge branch 'backend-new' of https://github.com/StickMen/KungFuRhino.git
fix, the build error of System.data.entity.infrastructure.
add UML project
refractory filter to support comment Audio as well
refactoringthe  filter classes to support comment Audio for future use
Merge branch 'dev' fixed connection between frontend and backend. Still a bug surrounding the persistence of circles on the screen. Working on it; but progress.