Close #4874

Corrected PHP documentation of calcul_price_total function

Update llx_propal_merge_pdf_product.sql

FIX Remove sql error when creating table llx_usergroup_extrafields.sql

FIX Remove sql error when creating table llx_establishment.sql

Add hook parameters on New search Box

FIX When changing thirdparty on event card, the showempty option of
contact was lost.
FIX Bad placeholder shown on combo to select a thirdparty.

Conflicts:
	htdocs/core/lib/files.lib.php

work.

Conflicts:
	htdocs/core/lib/files.lib.php

No need IF NOT EXISTS at install time

No need IF NOT EXISTS at install time

FIX Multiprice generator didn't recalculate prices if only the price_base_type property changes

Fix: 3.8-3.9 fix merge

Conflicts:
	htdocs/admin/dict.php

Conflicts:
	htdocs/admin/dict.php

Conflicts:
	htdocs/admin/dict.php

Conflicts:
	htdocs/admin/dict.php