StateMachineScene::{currentItem -> currentElement}

Change-Id: Ie3434294eb261a61b6032dfa3788ae7720be80c9
Remove UmlElement.qml, no longer required

Change-Id: I65125f3df5b7d3e0700c954ff0f08cef940333fc
Minor: Sort contents of .qrc file

Change-Id: I7a64ddc3b3224e433be4b9b9c4cbf684ac9a475b
QML: Rename last occurences of 'view' -> 'scene'

Change-Id: Iecdc963e690342316c9b7973c478ae10a2c16594