Added nex paramEditors in the third view + small improvements
New icons
Fix for drag&drop from browser to graph in row and column view
Drag&Drop multiple selections from browser to graph but cause some bugs to fix
Merge branch 'dev_DragnDrop' of https://github.com/buttleofx/ButtleOFX into dev_browser

Conflicts:
	buttleofx/gui/browser/qml/WindowFiles.qml
Fix bugs