added mail template callback functions

frontend.py

@@ -87,6 +87,18 @@ def city_page(city):
     return dict(info='There is no Ticketfrei bot in your city yet. Create one yourself!')
 
 
+@get('/city/mail/<city>')
+@view('template/mail.tpl')
+def display_mail_page(city, user):
+    return user.state()
+
+
+@post('/city/mail/submit/<city>')
+def subscribe_mail(user, city):
+    email = request.forms['mailaddress']
+    redirect('/city/' + city)
+
+
 @get('/settings')
 @view('template/settings.tpl')
 def settings(user):

template/mail.tpl

@@ -6,7 +6,7 @@ import markdown as md
 html = md.markdown(markdown)
 %>
 
-<form action="/city/mail/<% print(city) %>" method="post">
+<form action="/city/mail/submit/<% print(city) %>" method="post">
     <input type="text" name="mailaddress" placeholder="E-Mail address" id="mailaddress">
     <input name='confirm' value='Subscribe to E-Mail notifications' type='submit'/>
 </form>