Merge dev on Master
Adding dependencies
Merge dev
Merge dev

Conflicts:
	fr.cnes.sitools.ext.astronomy/nbproject/project.properties
Merge branch 'dev'
Improve build for single JAR generation
Remove unecessary dependencies
Improve votable2json converter by catching numberFormatException and by skipping the attribute. In fact, the error comes from the data provider, which should provide a number and does not provide any value.
Just add a TODO