Added 2 new images from Puigsacalm to the backgrounds
wsgi uses settings_private to launch
templates have a new string to determine which term and academic year we are on. Also, I've commented support for automated calendars (which would not work anyway, since I am no longer hosting this on the UPF servers)
A few modifications to account for the new lesson json used in the timetables. Also, less redundancy in lesson acquisitin by using distinct() in the update command. Will make updates faster.