Add git base URL

pelicanconf.py

@@ -7,6 +7,8 @@ from pelican_theme_teckids.pelicanconf import *
 SITENAME = 'schul-frei'
 SITELOGO = f'{SITEURL}/theme/artwork/banner-schul-frei.svg'
 
+GITWEB_BASE = "https://edugit.org/schul-frei/schul-frei.dev/-/tree/master"
+
 MENUITEMS += [
     ('Lanki.cloud', 'pages/lankicloud.html'),
     ('Hackathons', 'pages/hackathon.html'),