Adding modeling for class_subject times and timetables
Adding first timetables class listing templates
Minor fixes
Adding unique together and verbose names for class subject time
Adding fix to time unicode
Adding fix to weekday choices
Adding fixes to urls and adding a new url
Adding null to class timetable
Adding first class timetable layout
Updating translation files
Adding Timetables to navbar
Updating translation files
Updating translation files
Adding fix of changing subjects in timetables
Minor changes on timetable layout
Minor fix