This version contains some minor updates and corrections.
This version is available at: http://viz-beta.u-strasbg.fr
A new version containing some cosmetic adding:
- add links to Simbad, Aladin, CDSportal in page 5
- add a link to the new CDS Xmatch service to cross catalogs
- redirect the page to the ReadMe file when catalog is not ready
- improve the catalogs statistics method
- fix bug for PostgreSQL installation to display large catalogs in a cone search