Remove the placeholder text from the change password input boxes.

issue #1461

resources/views/index.ejs

@@ -35,8 +35,8 @@
             </div>
 
             <form id="edit_password_form" class="showedit">
-              <input type="password" id="old_password" name="old_password" placeholder="old password" maxlength="80"/>
-              <input type="password" id="new_password" name="new_password" placeholder="new password" maxlength="80"/>
+              <input type="password" id="old_password" name="old_password" maxlength="80"/>
+              <input type="password" id="new_password" name="new_password" maxlength="80"/>
               <button id="changePassword">done</button>
 
               <div class="tooltip" for="old_password" id="tooltipOldRequired">Old password is required.</div>