use bootstrap button style in MessageSend_p.html

and align buttons with form

htroot/MessageSend_p.html

@@ -41,12 +41,15 @@
               You can use <a href="WikiHelp.html" onclick="window.open('WikiHelp.html','WikiHelp','toolbar=0,scrollbars=1,location=0,statusbar=0,menubar=0,resizable=1,width=640,height=480');return false;">Wiki Code</a> here.
             </p>
           </dd>
+          <dt></dt>
+          <dd>
+            <input type="hidden" name="hash" value="#[hash]#" />
+            <input type="hidden" name="messagesize" value="#[messagesize]#" />
+            <input type="hidden" name="attachmentsize" value="#[attachmentsize]#" />
+            <input name="new" type="submit" value="Enter" class="btn btn-primary" />
+            <input type="submit" name="preview" value="Preview" class="btn btn-default" />
+          </dd>
         </dl>
-        <input type="hidden" name="hash" value="#[hash]#" />
-        <input type="hidden" name="messagesize" value="#[messagesize]#" />
-        <input type="hidden" name="attachmentsize" value="#[attachmentsize]#" />
-        <input name="new" type="submit" value="Enter" />
-        <input type="submit" name="preview" value="Preview" />
       </fieldset>
       </form>
     ::
@@ -108,12 +111,15 @@
               You can use <a href="WikiHelp.html" onclick="window.open('WikiHelp.html','WikiHelp','toolbar=0,scrollbars=1,location=0,statusbar=0,menubar=0,resizable=1,width=640,height=480');return false;">Wiki Code</a> here.
             </p>
           </dd>
+          <dt></dt>
+          <dd>
+            <input type="hidden" name="hash" value="#[hash]#" />
+            <input type="hidden" name="messagesize" value="#[messagesize]#" />
+            <input type="hidden" name="attachmentsize" value="#[attachmentsize]#" />
+            <input name="new" type="submit" value="Enter" class="btn btn-primary" />
+            <input type="submit" name="preview" value="Preview" class="btn btn-default" />
+          </dd>
         </dl>
-        <input type="hidden" name="hash" value="#[hash]#" />
-        <input type="hidden" name="messagesize" value="#[messagesize]#" />
-        <input type="hidden" name="attachmentsize" value="#[attachmentsize]#" />
-        <input name="new" type="submit" value="Enter" />
-        <input type="submit" name="preview" value="Preview" />
       </fieldset>
     </form>
     ::