added DOB placeholder for personal information screen DOB

Author: regulator95

html/add_personal_information_dialog.html

@@ -41,8 +41,8 @@
         	<label for="personal_info_form_date_of_birth">
         		<span class='translate' data-i18n='info_dialog.dob'>Date of Birth</span>:
         	</label></th>
-            <td><input name="person.date_of_birth" size="30" maxlength="255" value="" tabindex="10" id="personal_info_form_date_of_birth" type="text">
-            	<div class='instructions'>mm/dd/yyyy</div>
+            <td><input name="person.date_of_birth" size="30" maxlength="255" value="" tabindex="10" id="personal_info_form_date_of_birth" type="text" placeholder="mm/dd/yyyy">
+            	<!-- <div class='instructions'>mm/dd/yyyy</div> -->
             </td>
         </tr>
         </table>