add menu icon

core/css/icons.css

@@ -90,6 +90,10 @@
 	background-image: url('../img/actions/mail.svg');
 }
 
+.icon-menu {
+	background-image: url('../img/actions/menu.svg');
+}
+
 .icon-more {
 	background-image: url('../img/actions/more.svg');
 }

core/img/actions/menu.svg

@@ -0,0 +1,12 @@
+<svg xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns="http://www.w3.org/2000/svg" height="16" width="16" version="1.1" xmlns:cc="http://creativecommons.org/ns#" xmlns:dc="http://purl.org/dc/elements/1.1/">
+ <metadata>
+  <rdf:RDF>
+   <cc:Work rdf:about="">
+    <dc:format>image/svg+xml</dc:format>
+    <dc:type rdf:resource="http://purl.org/dc/dcmitype/StillImage"/>
+    <dc:title/>
+   </cc:Work>
+  </rdf:RDF>
+ </metadata>
+ <path d="m2,2,0,2,12,0,0-2zm0,5,0,2,12,0,0-2zm0,5,0,2,12,0,0-2z"/>
+</svg>