Fix ezq toast timeout and fix yarn build command for Python 3 (#1266)

* Fix `ezToast()` timeout
* Force `yarn build` to use Python 3
* Closes #1265

CTFd/themes/core/assets/js/ezq.js

@@ -125,14 +125,16 @@ export function ezToast(args) {
     });
   }
 
-  let autohide = args.autohide || false;
+  let autohide = args.autohide !== false;
+  let animation = args.animation !== false;
   let delay = args.delay || 10000; // 10 seconds
 
   $("#ezq--notifications-toast-container").prepend(obj);
 
   obj.toast({
     autohide: autohide,
-    delay: delay
+    delay: delay,
+    animation: animation
   });
   obj.toast("show");
   return obj;

webpack.config.js

@@ -140,7 +140,7 @@ function getJSConfig(root, type, entries, mode) {
       // Pretty nasty hack, would be a little better if this was purely JS
       new WebpackShellPlugin({
         onBuildEnd:[
-          mode == 'development' ? 'echo Skipping JS stub generation' : 'python -c \'exec(\"\"\"\nimport glob\nimport os\n\nstatic_js_dirs = [\n    "CTFd/themes/core/static/js/**/*.dev.js",\n    "CTFd/themes/admin/static/js/**/*.dev.js",\n]\n\nfor js_dir in static_js_dirs:\n    for path in glob.glob(js_dir, recursive=True):\n        if path.endswith(".dev.js"):\n            path = path.replace(".dev.js", ".min.js")\n            if os.path.isfile(path) is False:\n                open(path, "a").close()\n\"\"\")\''
+          mode == 'development' ? 'echo Skipping JS stub generation' : 'python3 -c \'exec(\"\"\"\nimport glob\nimport os\n\nstatic_js_dirs = [\n    "CTFd/themes/core/static/js/**/*.dev.js",\n    "CTFd/themes/admin/static/js/**/*.dev.js",\n]\n\nfor js_dir in static_js_dirs:\n    for path in glob.glob(js_dir, recursive=True):\n        if path.endswith(".dev.js"):\n            path = path.replace(".dev.js", ".min.js")\n            if os.path.isfile(path) is False:\n                open(path, "a").close()\n\"\"\")\''
         ],
         safe: true,
       }),