Fix: When select_date is called with '' as preselected date,
automatic user date was not correctly et (We must set a date into PHP
server timezone area)
Fix: First param of select_date must always be forged with a dolibarr
date function and not time().
New: Add a page for tests.
Merge branch '3.5' of git@github.com:Dolibarr/dolibarr.git into 3.5