Add higest and lowest priority icons into toolbar

src/webui/www/private/index.html

@@ -83,8 +83,10 @@
                 <a id="resumeButton" class="divider"><img class="mochaToolButton" title="_(Resume)" src="theme/media-playback-start" alt="_(Resume)" width="24" height="24" onload="fixPNG(this)"/></a>
                 <a id="pauseButton"><img class="mochaToolButton" title="_(Pause)" src="theme/media-playback-pause" alt="_(Pause)" width="24" height="24" onload="fixPNG(this)"/></a>
                 <span id="queueingButtons">
-                    <a id="decreasePrioButton" class="divider"><img class="mochaToolButton" title="_(Decrease priority)" src="theme/go-down" alt="_(Decrease priority)" width="24" height="24" onload="fixPNG(this)"/></a>
+                    <a id="bottomPrioButton" class="divider"><img class="mochaToolButton" title="_(Move to bottom)" src="theme/go-bottom" alt="_(Move to bottom)" width="24" height="24" onload="fixPNG(this)"/></a>
+                    <a id="decreasePrioButton"><img class="mochaToolButton" title="_(Decrease priority)" src="theme/go-down" alt="_(Decrease priority)" width="24" height="24" onload="fixPNG(this)"/></a>
                     <a id="increasePrioButton"><img class="mochaToolButton" title="_(Increase priority)" src="theme/go-up" alt="_(Increase priority)" width="24" height="24" onload="fixPNG(this)"/></a>
+                    <a id="topPrioButton"><img class="mochaToolButton" title="_(Move to top)" src="theme/go-top" alt="_(Move to top)" width="24" height="24" onload="fixPNG(this)"/></a>
                 </span>
                 <a id="preferencesButton" class="divider"><img class="mochaToolButton" title="_(Options)" src="theme/preferences-system" alt="_(Options)" width="24" height="24" onload="fixPNG(this)"/></a>
             </div>