New colors for the menu
Merge branch 'develop' of github.com:buttleofx/ButtleOFX into develop
Undo / Redo paramInt & paramDouble (sliders) : ok
Merge branch 'develop' of github.com:buttleofx/ButtleOFX into develop

Conflicts:
	buttleofx/gui/paramEditor/qml/ParamDouble.qml
	buttleofx/gui/paramEditor/qml/ParamInt.qml
Add file SliderParam.qml used in ParamInt and ParamDouble

Files ParamInt.qml and ParamDouble.qml were the same !