Merge pull request #13 from ens-lgil/master

Fix: don't display an empty HTML table when the 'See also' and the 'List...
Schema version update
Production test db schemas updated
retain the compatibility with perl 5.10

An implicit hashref dereferencing has been substituted with an explicit one, on two occasions.
Merge pull request #14 from ens-lg4/master

retain the compatibility with perl 5.10