board admin : form added, <add> permission deleted, list display, search fields
board form : validator form for admin page
boards' model was refactored
test max board 10 ( modified)
board view : variable name changed(date_posted -> date_board_posts_created)
messages added
test data added
user admin : added & refactored
users' model : refactored & unicode method added
users/tests/test_user_manager.py : refactored
basic user form for admin page added