users/tests/test_user_manager.py : name field test added
users/tests/test_signup_page.py : name field test added
custom_msg : custom_msg.user_name_max_length_error
users/forms.py : user name form added ( optional field)
users/views.py : validation for POST about user name added ( optional field )
templates/base.html : self disappearing message using jquery
templates/message.html : 1. what message(success? error? or warning?) 2. message info
users/views.py : 1. what message(success? error? or warning?) 2. message info
buildbuild/custom_msg.py : signup messsage added
Merge pull request #89 from wikibootup/message_tags

user name field added, self disappearing message using jquery, message information added