File upload, download is added.
Merge pull request #2 from tgisaturday/master

main page is changed
list main base css change
Merge pull request #3 from dimitree/master

base list main css change
comment's model is modified.
Merge remote-tracking branch 'upstream/master'
migration tool is changed to South
sh is making changes.
conflicts are solved.
Merge pull request #4 from shpark006/master

app itemPage is created.
achievements is added.
Merge remote-tracking branch 'upstream/master'
bug is fixed.
itempage urls, views, templates are modified
google calendar is added.
Merge pull request #5 from shpark006/master

itemPage contents are added and modified
signin is added.
merge from safari master branch
signup is removed. there is a bug.
Merge pull request #6 from bosung/master

signin is maded.