Add option to enable keypad (in most cases, we don't need this).

htdocs/cashdesk/include/keypad.php

@@ -15,8 +15,17 @@
  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  */
 
+/**
+ * Return a string to outptu a keypad
+ *
+ * @param	string		$keypadname		Key pad name
+ * @param 	string		$formname		Form name
+ * @return	string						HTML code to show a js keypad.
+ */
 function genkeypad($keypadname, $formname)
 {
+	if (empty($conf->global->CASHDESK_SHOW_KEYPAD)) return '';
+
 	// défine the font size of button
 	$btnsize=32;
 	$sz='<input type="button" id="closekeypad'.$keypadname.'" value="X" style="display:none;" onclick="closekeypad(\''.$keypadname.'\')"/>'."\n";