second commit
Merge branch 'master' of https://github.com/PatrickSeet/pa2chu into patbranch
merge models.py
Merge pull request #4 from PatrickSeet/chuck

change in student
before merge
update from chuck
add time format
Merge pull request #5 from PatrickSeet/patbranch

Patbranch updated time
calendar
Merge branch 'master' of https://github.com/PatrickSeet/pa2chu into chuck
it's ok
teacher and student functions