Fix: [ bug #1509 ] Expedition admin submit error

Expedition admin free text & watermark submit error
Fix 1462, 1468, 1480, 1483, 1490, 1497 $this instead of $object (3.5 fix)
Fix 1455 outstanding amount
Merge branch '3.5' of github.com:fappels/dolibarr into fappels-3.5
Merge branch 'fappels-3.5' into 3.5
Merge branch '3.5' of git@github.com:Dolibarr/dolibarr.git into 3.5

Conflicts:
	ChangeLog
Merge pull request #1674 from atm-maxime/3.5

Fix 1462, 1468, 1480, 1483, 1490, 1497 $this instead of $object (3.5 fix...
Fix 1462, 1468, 1480, 1483, 1490, 1497 $this instead of $object
Fix 1455 outstanding amount
Fix: [ bug #1425 ]
Fix: [ bug #1428 ] "Nothing" is shown in the middle of the screen in a
supplier order.
Fix: [ bug #1431 ] Reception and Send supplier order box has a weird top
margin.
Merge pull request #1675 from FHenry/3.5

Fix == instaed of = in variable affectation
Fix: [ bug #1476 ] Invoice creation form loses invoice date when there
is a validation error
Fix: Renaming a project with uplaoded files failed.
Fix: Deprecated and no more used fields should not appear to user.
Fix: Cloning must use dol_clone
Fix: Question about warehouse must not be done when module stock is
disabled.
Fix: Option STOCK_SUPPORTS_SERVICES was not correctly implemented
(missing test at some places).
FIX #1485:LINEBILL_SUPPLIER_DELETE failure trigger leads to an endless loop
Add fix to changelog
Merge pull request #1681 from KreizIT/FIX1485

FIX #1485:LINEBILL_SUPPLIER_DELETE failure trigger leads to an endless