Use locale to get html

[pdrillin]

• Ticket : #6
• Use jLocale to determine the language and translate some data in html if it's possible

[mdouchin]

After some more thinking, I think:

• you should not use the try catch in the controler, but in the search class, method getData
• you should never send the result of $e->getMessage() as it could contain sensitive information about the database
• before running the SQL, you should run a SQL file alllowing to know which version of the function to use :

  SELECT column_name
  FROM information_schema.columns
  WHERE table_schema = 'pgmetadata'
  AND table_name   = 'glossary'
  AND column_name LIKE 'label_%';

  If no line is return, use the get_hml_default, if some lines are returned, use the new get_html