implement a scrollBar and splitterColumn in paramEditor
fixing the problem of the loop on height value
reorganise scrollbar files
Merge branch 'develop' of github.com:buttleofx/ButtleOFX into develop

Conflicts:
	buttleofx/gui/paramEditor/qml/ParamEditor.qml
Merge branch 'develop' of github.com:buttleofx/ButtleOFX into develop