styling: dashboard spacing around buttons

frontend/css/sections/front_dashboard.css.less

@@ -291,3 +291,10 b''
         margin-bottom: 15px
     }
 }
+
+.graph-type {
+    .select.input-sm,
+    .btn-group {
+        margin: 0 10px 10px 0;
+    }
+}