Merge pull request #103 from simoendem/pSp

ganti rupo
add invoice when add second semester of extra
Merge pull request #104 from bhimasta/bhimasta#reregistration

add invoice when add second semester of extra
create JS code to handle confirmation dialog about payment
hide confirmation dialog on media print
Merge pull request #105 from albertusatria/alb#makePayment

Alb#make payment
item type optional gui