Added move/copy icons, improved edit icon and some icon positions

plugins/managesieve/skins/classic/managesieve_mail.css

@@ -1,6 +1,6 @@
 #messagemenu li a.filterlink {
   background-image: url(images/filter.png);
-  background-position: 7px 0;
+  background-position: 7px 1px;
 }
 
 #sievefilterform {

skins/classic/mail.css

@@ -209,12 +209,22 @@
 #messagemenu li a.openlink,
 #attachmentmenu li a.openlink
 {
-  background-position: 7px -53px;
+  background-position: 7px -52px;
 }
 
 #messagemenu li a.editlink
 {
-  background-position: 7px -71px;
+  background-position: 6px -70px;
+}
+
+#messagemenu li a.movelink
+{
+  background-position: 6px -161px;
+}
+
+#messagemenu li a.copylink
+{
+  background-position: 6px -143px;
 }
 
 #markmessagemenu li a,