passed all test cases
add ItemLog class and ItemLogTest
#109 change to model.Goal.insert
add classmethod get,remove in Goal,ItemLog class
add test_get, test_get_duplication, test_remove, test_remove_duplication
add test_get, test_get_duplication, test_remove, test_remove_duplication
Merge pull request #136 from ICTKyouikukei2013/ichiren/goal

Ichiren/goal