Implement FrameDiff
Correct PixelDiff comment spelling
Implement DifferenceFactory
Add ListedPushButton
Make Video subclass of Observable
Remove Observable inheritance in FilteredVideo because now Video is alredy Observable
Add test widget for ListedPushButton
Fix error in ListedPushButton which prohibited connecting the signals to slots
Add localiztation file
Add heightForWidth method in ListedPushButton to ensure to height-width-ratio
Implement ThumbnailListWidget to be able to display and update its buttons
Add test widget for the ThumbnailListWidget
Implement test widget for ThumbnailListWidget
Fixed errors concerning the execution of the ThumbnailListWidget
Minor changes in ListedPushbutton, its test class
Make ThumbnailListWidget observable to connect mit the slots of VideoListController
Implement PlayerFunctions' methods
Add setFPS slot to PlayerController
Add missing playerChanged signal to PlayerFunctions
Add missing viewTypeChanged signal to ViewState