Fix: ER button set_paid & merge with old option setPaid

New : add stats by qty on report turnover by product (+ clean code)

NEW : add extrafields into import product

Fix travis

develop

Conflicts:
	htdocs/expensereport/card.php
	htdocs/projet/element.php

Remove useless filter for "text" parameter of boxes content

fields into list view.

Uniformize page name societe.php into list.php

This filter doesn't allow to display "0" value and is not applied to the similar "text2" parameter.

Fix: Accountancy list: Use print_liste_field_titre

FIX hide product category if it's not enable

NEW : Set amount for withdraws requests

Review ER : remove fk_c_tva and add  option MAIN_GENERATE_DOCUMENTS_WITHOUT_VAT