Prepare database for more localtax types.
New: hooks for pdf_writelinedesc now implement the rule to overwrite or
not default code (http://wiki.dolibarr.org/index.php/Hooks_system)
Fix: Ton of bugs into renaming fields
Fix: Rename of fields
Fix: Force format text of excel text fields
Fix: Missing style and typo error
Add trigger BILL_UNVALIDATE when invoice is unvalidate
Merge pull request #724 from KreizIT/develop

Add trigger BILL_UNVALIDATE when invoice is unvalidate
Fix: PHPUnit tests are back.
Merge branch 'develop' of git@github.com:Dolibarr/dolibarr.git into
develop

Conflicts:
	htdocs/install/mysql/migration/3.3.0-3.4.0.sql
Fix: Fix ton of regression due to field name change