Aug 7 - Update new design as default

app/routes/ui.py

@@ -16,7 +16,7 @@ layout shell base.html extends.
 import logging
 
 from flask import (Blueprint, render_template, redirect, request,
-                   url_for, flash)
+                   url_for, flash, current_app)
 from flask_login import login_required, current_user
 from sqlalchemy import func
 
@@ -51,7 +51,8 @@ def switch_theme():
         flash('Unknown design option.', 'warning')
         return redirect(_safe_next(request.form.get('next')))
 
-    previous = current_user.ui_theme or 'classic'
+    previous = current_user.ui_theme or current_app.config.get(
+        'DEFAULT_UI_THEME', 'modern')
     if previous != theme:
         current_user.ui_theme = theme
         db.session.commit()