imgtl v1.1 update

include next changes:
- upgrade todc-bootstrap version (2 to 3)
- implement nsfw, private, view count feature
- new feature: anonymous upload with logged in user
- new database field: user.user_anonymous
- new feature: exif support (ui not implemented yet)
- new feature: image option (include nsfw, private, anon)
- small ui changes
- interface language change (english -> korean)
- fix dialog problem
- now anonymous user can remove their own uploads
- and others