feat: add display name functionality for users and update related views

src/routes/auth.js

@@ -20,6 +20,7 @@ router.post('/login', (req, res) => {
 
   req.session.userId = user.id;
   req.session.username = user.username;
+  req.session.displayName = user.display_name || user.username;
   req.session.isAdmin = !!user.is_admin;
   req.session.isOrganizer = !!user.is_organizer;
 
@@ -63,6 +64,7 @@ router.post('/register', (req, res) => {
     const userId = Users.create(username, password);
     req.session.userId = userId;
     req.session.username = username;
+    req.session.displayName = username;
     req.session.isAdmin = false;
     req.session.isOrganizer = false;
     req.session.flash = { type: 'success', message: 'Account created! Welcome to Loot Hunt.' };
@@ -113,6 +115,7 @@ router.post('/reset/:token', (req, res) => {
   // Log the user in
   req.session.userId = tokenRecord.user_id;
   req.session.username = tokenRecord.username;
+  req.session.displayName = tokenRecord.username;
   req.session.isAdmin = false; // they can re-check on next load
   res.redirect('/');
 });