template: removed register link if registration is not enabled

src/app.py

@@ -26,7 +26,7 @@ login.login_view = "login"
 @app.context_processor
 def inject_title():
     return dict(title=config.TITLE, style=config.STYLE,
-                description=config.DESCRIPTION)
+                description=config.DESCRIPTION, registration=config.ALLOW_REGISTRATION)
 
 
 @app.errorhandler(404)

src/templates/template.html

@@ -33,8 +33,10 @@
         Made with <a href="https://github.com/tiyn/container-critique">Container Critique </a>.<br>
         {% if current_user.is_anonymous %}
         <a href="{{ url_for('login') }}">Login</a>
+        {% if registration %}
         -
         <a href="{{ url_for('register') }}">Register</a>
+        {% endif %}
         {% else %}
         <a href="{{ url_for('logout') }}">Logout</a>
         -