right padding in gallery nav to match button gap at all screen sizes

webapp/src/assets/less/variables.less

@@ -225,6 +225,15 @@
   padding-right: 15px;
   background: #fff;
 }
+
+// Make the gap increase for larger screens, this means that the right padding
+// always matches the gap in uk-navbar-right
+@media (width >= 960px) {
+    .ofm-tab-navbar {
+        padding-right: 30px;
+    }
+}
+
 .hook-inverse() {
     .ofm-tab-navbar {
         background: #252525;