try to connect browser to viewer
Link browser to the viewer : creation of readerNode & graph must be functionnal
correction of merge: drag and drop between browser and viewer
Map of graph in buttleData
Switch between the two graph thanks to the variable currentGraphWrapper
Only print for verification
change the scrollbar color

change the scrollbar color
Previous and next arrows are fonctionnal
Merge branch 'feature/LinkBrowserViewer' of https://github.com/buttleofx/ButtleOFX into feature/newParametersEditor

Conflicts:
	buttleofx/MainWindow.qml
	buttleofx/data/buttleData.py
	buttleofx/gui/paramEditor/qml/ParamEditor.qml
Added nex paramEditors in the third view + small improvements
Try to create a graph for the parametersEditor, which is written in buttleData
Minor : correct mistake
Creation of node in the graphParametersEditor from the Parameters Editor
New icons
Merge branch 'release' of https://github.com/buttleofx/ButtleOFX into feature/newParametersEditor

Conflicts:
	buttleofx/MainWindow.qml
	buttleofx/gui/browser/qml/WindowFiles.qml
	buttleofx/gui/paramEditor/qml/ParamEditor.qml
corrects some bug display because of merge
corrects some bug display because of merge
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
change the display of Node Properties, and fix some bugs of display