Fix '옳바르지' to '올바르지'
Merge branch 'design'
bugfix.
Merge branch 'master' of https://github.com/ghilbut/lgcodechallenger
bugfix.
bugfix.
Read competition from DB

Get the competition which is satisfied with:
the competition which is ready only.
the earliest competition among not opended competitions.
refactoring
- bugfix
- apply 'sangmyung.kr' email filter
- make inactivated user list page
Merge branch 'master' of https://github.com/ghilbut/lgcodechallenger
apply email of 'ewha womans university.
bugfix.
practice migration complete.
Merge branch 'design' into work