Jms multisite for joomla (All Editions)

Improve the JMS maintenance menu to recongnize the MySQL statement "ADD COLUMN CONSTRAINT <fieldname>".
In fact ignore the word CONSTRAINT when searching the <fieldname> during the verification that a column (field) exists in a MySQL table.

Bundled with Patches definition 1.3.51

• Add JMS Tools (install) definitions for :
  - JBusinessDirectory
  - JoomlaLMS
  - Store Locator
• Update Joomla 3.4 sharing definition for:
  - JBusinessDirectory
  - JoomlaLMS