initialized Git repository
* Import Pentarea Project
* commit test
* Make Challenge App
* Write Challenge Model
* ADD challenge File
change static path in urls.py
* Make MemberLoginView
* Make AuthenticationForm
* Make MemberLogout
Merge branch 'master' of https://dev.naver.com/git/pentarea

Conflicts:
	pentarea/urls.py
* Modify urls.py
* Add .gitignore File
* modified views.py
* Add ProbListView and Challenge Model
* applied challenge design
* get prob_data and tag_data in challenge view
* applied auth javascript in challenge view
* Add AuthView in challenge view
* modified AuthView in challenge view
* modified auth form in challege/list.html template
* Change Challenge Model
* add AuthView url in urls.py
* modified AuthView in challenge view
* Add Rank Template and Modify "base.html"
* Modify rank template and something unnecessary; Add ShowRankView