Merge pull request #75 from dobestan/develop

add SignUp page
users/views.py : url changed, users/* -> /*
users/urls.py : url changed, users/* -> /*
buildbuild/urls.py : url changed, users/* -> /*
users/tests/* : url changed, users/* -> /*
buildbuild/settings.py : login url changed (/users/login/ -> /login/)
projects/tests : url changed /users/login/ -> /login/
teams/tests : url changed /users/login/ -> /login/
users/tests : url changed /users/login/ -> /login/
templates/base.html : url changed /users/login/ -> /login/
add information should show at menu
remove some menus
Merge branch 'master' of github.com:buildbuild/buildbuild into feature/dynamic-menu-for-team-and-project

* 'master' of github.com:buildbuild/buildbuild:
Merge pull request #77 from dobestan/feature/dynamic-menu-for-team-and-project

Feature/dynamic menu for team and project
update base.html : update table view for users
add scripts : for users view with bootstrap
update table view : init structure
buildbuild/urls.py : team list -> /teams/<id>
update base.html : remove additional informations
buildbuild/views.py : team list in home ->  team list in teams' team list