New: Add picto on tab titles

htdocs/categories/categorie.php

htdocs/comm/action/document.php

htdocs/comm/action/fiche.php

htdocs/comm/action/info.php

htdocs/comm/fiche.php

htdocs/comm/remise.php

htdocs/comm/remx.php

htdocs/compta/fiche.php

htdocs/lib/usergroups.lib.php

htdocs/soc.php

htdocs/societe/commerciaux.php

htdocs/societe/document.php

htdocs/societe/info.php

htdocs/societe/lien.php

htdocs/societe/notify/fiche.php

htdocs/societe/rib.php

htdocs/societe/socnote.php

htdocs/user/addon.php

htdocs/user/clicktodial.php

htdocs/user/fiche.php