Export to CSV with Semester begin & end 

all bugs that i found fixed.
now when user selects "export to csv" he will be prompt
to input the begining and the end of the semester.

the csv file will populate the whole semester!
just one click and you are done.

@liranbg  (Liran) please check on Windows and OSX.
linux is rocking!

let me know if you need anything else.
sagi