allow different unit for radius and center, put mode vector in the fit mode as an option (fit mode's input : ref image or vector file) get ride of the function trying to read the info of the input vector file in update, it is now only in execute this can easily be back in the update it is a subjectiv choice.

ENH: Check of c++11 support and module declaration of c++11 requirements are not needed anymore in otb configuration

ENH: try to compile mapla and monteverdi as shared libs (don't find the reason why its always build as static libs)

- update CMake minimum required version
- set the C++ standard
- set otb::Image constructor to =delete to test