Add space around / in the nbextension display

Author: jtpio

nbresuse/static/main.js

@@ -44,7 +44,7 @@ define([
                 if (limits['memory']) {
                     if (limits['memory']['rss']) {
                         maxMemoryUsage = humanFileSize(limits['memory']['rss']);
-                        display += "/" + maxMemoryUsage
+                        display += " / " + maxMemoryUsage
                     }
                     if (limits['memory']['warn']) {
                         $('#nbresuse-display').addClass('nbresuse-warn');
@@ -76,4 +76,4 @@ define([
     return {
         load_ipython_extension: load_ipython_extension,
     };
-});
+});