Preparing PHP and javascript files for the new themes

- change HTML header code
- add new class to Pi-hole logo
- add new classes to auditlog buttons
- add new classes to query log and long-term query log buttons

Signed-off-by: RD WebDesign <github@rdwebdesign.com.br>

scripts/pi-hole/php/sidebar.php

@@ -5,7 +5,7 @@
             <!-- Sidebar user panel -->
             <div class="user-panel">
                 <div class="pull-left image">
-                    <img src="img/logo.svg" alt="Pi-hole logo">
+                    <img class="logo-img" src="img/logo.svg" alt="Pi-hole logo">
                 </div>
                 <div class="pull-left info">
                     <p>Status</p>