Enable registered vector formats in spatial import extension

* Added registered vector formats in registry

(closes OpenFLUID/openfluid#438)
Add of missing vector types for drawing in MapView

(closes OpenFLUID/openfluid#434)
Fix of MapView zooming behaviour and points colors

* Fixed mouse wheel event behaviour
* Switched to version 2.0.1~beta3
Fix of file extension checking in spatial data import 

(closes OpenFLUID/openfluid#425)
Fix of project checker in Builder when the model updates spatial graph

* Added datasets and simulators for tests
* Cleaned code

(closes OpenFLUID/openfluid#391)
Introduction of a filesystem watcher on input directory in Builder

* Added filesystem watcher on input directory in order to launch 
  check process when extra files are added,deleted or renamed

(closes OpenFLUID/openfluid#426)
Clean codes
* Cleaned codes to follow coding style
* Remove some warnings
Add Points data for tests