Display a PopUp to select a start date
Prepare a branching
Prepare Branching
Add the SpeleoChart Class
Add the SpeleoChart Class
Can update as we want (programmable way) the date range.
Merge branch 'feature/SpeleoChart' into develop
Merge branch 'feature/DateSelection' into develop

Conflicts:
	.idea/workspace.xml
	src/main/java/org/cds06/speleograph/AppController.java
	src/main/resources/org/cds06/speleograph/App.fxml