Melhora aparência da barra actions nas changelists

sigi/static/css/changelists.css

@@ -1,10 +1,17 @@
 .side-wrapper {
   width: 100%;
 }
+
 #changelist {
   width: 100%
 }
 
+.actions {
+  background-color: transparent;
+  box-shadow: none;
+  padding: 0 5px;
+}
+
 .float-filter {
   right: 0;
   left: auto;