[minor]dont show doctypes with all disabled roles in permission manager (#2268)

frappe/core/page/permission_manager/permission_manager.py

@@ -17,7 +17,8 @@ def get_roles_and_doctypes():
 		"doctypes": [d[0] for d in frappe.db.sql("""select name from `tabDocType` dt where
 			istable=0 and
 			name not in ('DocType') and
-			exists(select * from `tabDocField` where parent=dt.name)""")],
+			exists(select * from `tabDocField` where parent=dt.name) and
+			exists(select * from `tabDocPerm` dp,`tabRole` role where dp.role = role.name and dp.parent=dt.name and not role.disabled)""")],
 		"roles": [d[0] for d in frappe.db.sql("""select name from tabRole where
 			name != 'Administrator' and disabled=0""")]
 	}