convert all icons to font-awesome vector based / retina compatible icons

Conflicts:
	data/interfaces/default/artist.html

data/interfaces/default/logs.html

@@ -5,7 +5,7 @@ lossless<%inherit file="base.html"/>
 
 <%def name="body()">
 	<div class="title">
-		<h1 class="clearfix"><img src="interfaces/default/images/icon_logs.png" alt="Logs"/>Logs</h1>
+		<h1 class="clearfix"><i class="fa fa-flag"></i> Logs</h1>
 	</div>
 	<table class="display" id="log_table">
 		<thead>