Fix for debian
Fix: [ bug #1618 ] PHP Error thrown when saving a barcode
New: getNomUrl can point to different page for tasks
New: Can filter on date into tab "Referring object" of a project.
Fix: td balance
id_parent and id_children was not set.
So introduce new method to return same with no risk to break current
working code to address this.
Fix: var not initialised
Fix: doxygen
Merge remote-tracking branch 'origin/3.6' into develop

Conflicts:
	htdocs/product/fiche.php
	htdocs/user/class/user.class.php
Fix: Can see only trip allowed.
New: Add permissions to read all trips and expenses.
Fix: Use correct permission on correct field.
Ajout log
New: Add template of emails into dictionnary.