Modification of the selection possibility. 
Starting to repair the properties loading (and maybe the saving too)
The loading system is now almost finish. Finally, I will erase
LoadProperties.java and WriteProperties, and just use the
PropertiesAccess.java.
Change the properties folder. It was the path for the android app.
Add the creation of the file to prevent NPE exception. The verification
will be done each time we need to load properties.
Apparently, loading and saving system are done. Start a test and could
resolve future problem in the week. When I'm sure that the new system
work welln, I'll erase the precedent system (WriteProperties.java and
LoadProperties.java).