Add setting to allow anonymous editing

Author: amadanmath

client/src/visualizer_ui.js

@@ -2041,6 +2041,11 @@ var VisualizerUI = (function($, window, undefined) {
               auth_button.val('Logout ' + user);
               dispatcher.post('user', [user]);
               $('.login').show();
+            } else if (response.anonymous) {
+              user = 'Anonymous';
+              auth_button.hide();
+              dispatcher.post('user', [user]);
+              $('.login').show();
             } else {
               user = null;
               auth_button.val('Login');

config_template.py

@@ -45,6 +45,7 @@
 #WORK_DIR = join(BASE_DIR, 'work')
 
 # To allow editing, include at least one USERNAME:PASSWORD pair below.
+# To allow anonymous editing, set `USER_PASSWORD = False`.
 # The format is the following:
 #
 #     'USERNAME': 'PASSWORD',

server/src/auth.py

@@ -101,7 +101,10 @@ def logout():
 def whoami():
     json_dic = {}
     try:
-        json_dic['user'] = get_session().get('user')
+        if USER_PASSWORD != False:
+            json_dic['user'] = get_session().get('user')
+        else:
+            json_dic['anonymous'] = True
     except KeyError:
         # TODO: Really send this message?
         Messager.error('Not logged in!', duration=3)