Merge pull request #416 from LorenDB/jdenticon

src/Cache_p.h

src/CallManager.cpp

src/CallManager.h

src/JdenticonProvider.cpp

src/JdenticonProvider.h

src/MainWindow.cpp

src/MainWindow.h

src/UserSettingsPage.cpp

src/UserSettingsPage.h

src/timeline/RoomlistModel.cpp

src/timeline/RoomlistModel.h

src/timeline/TimelineModel.cpp

src/timeline/TimelineModel.h

src/timeline/TimelineViewManager.cpp

src/timeline/TimelineViewManager.h

src/ui/Theme.h