New: Add hidden option PRODUCT_DISABLE_CUSTOM_INFO to disable custom
info management (used for export activity only)
Fix: Bad management error
New: Uniformize visible information on payment lists.
Fix and uniformize code for payment of salaries.
Qual: Uniformizing payments
Fix: ajax_combobox function must be included before called.
New: Feature of module survey are now localized into top menu "Tools".
Qual: clean code
Merge branch 'develop' of git@github.com:Dolibarr/dolibarr.git into develop
Action triggers: added missing triggers to the data dictionnary

These triggers were programmed in
htdocs/core/triggers/interface_50_modAgenda_ActionsAuto.class.php
but were nowhere to be found in the interface because they didn't hit the database.
Action triggers: Added copyright

Reindented the whole block because it was out.
Automatic agenda triggers: uncomment useful syslog

The syslog was commented but is useful to spot unimplemented handlers that were nonetheless
enabled in the administration interface.
Also made it issue a warning level message.
Action triggers: added missing triggers to 3.6 migration script

These are the same changes than commit 3afb3a874d9d1533947651de9db28c9207278908 but for the
migration script
3.6 migration script: fixed invalid comments
Action triggers/Langs: fixed a bad translation key
Added a dev script to recursively deduplicate file lines on a per file basis

This script is useful to deduplicate language files
Deduplicated lines of the reference language files

Used the new deduplicatefilelinesrecursively.sh script
Qual: generic shebang
Added a dev script to help identify duplicate translation keys in language files
Langs: removed duplicate key
Langs: added translation string for action triggers that were missing