transmit version number from medInria to each plugins
plugin version settings simplified to directly get medInria's version
plugin version settings simplified to directly get medInria's version - 2 (some plugins forgotten)
Real-time update of the cursor informations
Paint : right-click for erasing
Add right-click = erasing for Magic Wand
Updating the license, authors and copyright dates
Correct typos in some authors' names
Correct Erase problem and remove the State structure
Fuse Paint and Erase buttons