readded footer buttons from the old template

as discussed at https://github.com/splitbrain/dokuwiki/pull/82#r419699

lib/tpl/dokuwiki/css/design.css

@@ -453,11 +453,17 @@
 #dokuwiki__footer > .pad {
     font-size: 0.875em;
 }
-#dokuwiki__footer div.license {
+#dokuwiki__footer div.license,
+#dokuwiki__footer div.footerbuttons {
     text-align: center;
 }
-#dokuwiki__footer .license img {
-    margin: 0 .5em 0 0;
-    float: none;
+#dokuwiki__footer div.license {
+    margin-bottom: 0.5em;
+}
+#dokuwiki__footer div.footerbuttons img {
+    opacity: 0.5;
 }
 
+#dokuwiki__footer div.footerbuttons a:hover img {
+    opacity: 1;
+}

lib/tpl/dokuwiki/tpl_footer.php

 <!-- ********** FOOTER ********** -->
 <div id="dokuwiki__footer"><div class="pad">
-    <?php tpl_license('button') /* content license, parameters: img=*badge|button|0, imgonly=*0|1, return=*0|1 */ ?>
+        <?php
+            $tgt = ($conf['target']['extern']) ? 'target="'.$conf['target']['extern'].'"' : '';
+            tpl_license(''); // text only
+        ?>
+
+    <div class="footerbuttons">
+
+        <?php tpl_license('button',true,false,false); // button, no wrapper?>
+        <a <?php echo $tgt?> href="http://www.dokuwiki.org/donate" title="Donate"><img src="<?php echo tpl_basedir(); ?>images/button-donate.gif" alt="Donate" width="80" height="15" /></a>
+        <a <?php echo $tgt?> href="http://www.php.net" title="Powered by PHP"><img src="<?php echo tpl_basedir(); ?>images/button-php.gif" width="80" height="15" alt="Powered by PHP" /></a>
+        <a <?php echo $tgt?> href="http://validator.w3.org/check/referer" title="Valid XHTML 1.0"><img src="<?php echo tpl_basedir(); ?>images/button-xhtml.png" width="80" height="15" alt="Valid XHTML 1.0" /></a>
+        <a <?php echo $tgt?> href="http://jigsaw.w3.org/css-validator/check/referer?profile=css3" title="Valid CSS"><img src="<?php echo tpl_basedir(); ?>images/button-css.png" width="80" height="15" alt="Valid CSS" /></a>
+        <a <?php echo $tgt?> href="http://dokuwiki.org/" title="Driven by DokuWiki"><img src="<?php echo tpl_basedir(); ?>images/button-dw.png" width="80" height="15" alt="Driven by DokuWiki" /></a>
+    </div>
 </div></div><!-- /footer -->
 
 <?php _tpl_include('footer.html') ?>