Do not allow DB quota = 0 when db quota client limit > 0 (#4355)

interface/web/sites/database_edit.php

interface/web/sites/lib/lang/ar_database.lng

interface/web/sites/lib/lang/bg_database.lng

interface/web/sites/lib/lang/br_database.lng

interface/web/sites/lib/lang/ca_database.lng

interface/web/sites/lib/lang/cz_database.lng

interface/web/sites/lib/lang/de_database.lng

interface/web/sites/lib/lang/dk_database.lng

interface/web/sites/lib/lang/el_database.lng

interface/web/sites/lib/lang/en_database.lng

interface/web/sites/lib/lang/es_database.lng

interface/web/sites/lib/lang/fi_database.lng

interface/web/sites/lib/lang/fr_database.lng

interface/web/sites/lib/lang/hr_database.lng

interface/web/sites/lib/lang/hu_database.lng

interface/web/sites/lib/lang/id_database.lng

interface/web/sites/lib/lang/it_database.lng

interface/web/sites/lib/lang/ja_database.lng

interface/web/sites/lib/lang/nl_database.lng

interface/web/sites/lib/lang/pl_database.lng