OPAL-2130: Validation of import formats
Merge pull request #379 from emorency/OPAL-2129

OPAL-2130: Validation of import formats
Support enum type for unique index
(cherry picked from commit d9c510f)
Merge branch 'master' of github.com:obiba/opal
OPAL-2170: Adding help text to SQL database creation form. JDBC options are opened by default.
OPAL-2170: Cleaning comments
Fixing PMD warnings
Fixing PMD warnings