studnt page filter
Merge branch 'master' of https://github.com/aglos/A-Smart-Lecturer into sharon2
Added filter to student page
will show only selected course exercise
studnt page
attach lior's db of se-class studens and grades.
added total grades to admin page
TestClassForStatisticsFunctionsClass : a class that tests all of the
functions in StatisticsFunctionsClass
Merge branch 'master' of https://github.com/aglos/A-Smart-Lecturer into avshalom
pull
Merge pull request #73 from aglos/sharon2

after abu destroy all classes
added css