fix device.inc.php indents and switch to using offsets

html/pages/device/edit/device.inc.php

@@ -1,5 +1,4 @@
 <?php
-
 if ($_POST['editing']) {
     if ($_SESSION['userlevel'] > "7") {
         $updated = 0;
@@ -65,15 +64,13 @@ elseif ($update_message) {
 ?>
 
 <div class="row">
-    <div class="col-sm-2"></div>
-    <div class="col-sm-1">
+    <div class="col-md-1 col-md-offset-2">
         <form id="delete_host" name="delete_host" method="post" action="delhost/" role="form">
             <input type="hidden" name="id" value="<?php echo($device['device_id']); ?>">
             <button type="submit" class="btn btn-danger" name="Submit"><i class="fa fa-trash"></i> Delete device</button>
         </form>
     </div>
-    <div class="col-sm-1"></div>
-    <div class="col-sm-1">
+    <div class="col-md-1 col-md-offset-2">
         <?php
         if($config['enable_clear_discovery'] == 1) {
         ?>
@@ -83,7 +80,7 @@ elseif ($update_message) {
         ?>
     </div>
 </div>
-<br />
+<br>
 <form id="edit" name="edit" method="post" action="" role="form" class="form-horizontal">
 <input type=hidden name="editing" value="yes">
     <div class="form-group">
@@ -123,8 +120,7 @@ if ($unknown) {
     </div>
 </div>
 <div class="form-group">
-    <div class="col-sm-2">
-    </div>
+    <div class="col-sm-2"></div>
     <div class="col-sm-6">
       <input id="sysLocation" name="sysLocation" class="form-control" <?php if (!$override_sysLocation) echo(' disabled="1"'); ?> value="<?php echo($override_sysLocation_string); ?>" />
     </div>
@@ -141,8 +137,11 @@ if ($unknown) {
        <input name="ignore" type="checkbox" id="ignore" value="1" <?php if ($device['ignore']) echo("checked=checked"); ?> />
     </div>
 </div>
-  <div class="col-sm-2"></div>
+<div class="row">
+    <div class="col-md-1 col-md-offset-2">
         <button type="submit" name="Submit"  class="btn btn-default"><i class="fa fa-check"></i> Save</button>
+    </div>
+</div>
 </form>
 <br />
 <script>
@@ -167,13 +166,8 @@ if ($unknown) {
     });
 </script>
 <?php
-
 print_optionbar_start();
-
 list($sizeondisk, $numrrds) = foldersize($config['rrd_dir']."/".$device['hostname']);
-
 echo("Size on Disk: <b>" . formatStorage($sizeondisk) . "</b> in <b>" . $numrrds . " RRD files</b>.");
-
 print_optionbar_end();
-
 ?>