add 3 ntact_us module empty files

base.html
base_contact_us.html
real_contact_us.html
Change views style

from "import * " to "BUCTML.views" in first par of patterns.
edit base.html

add 5 blocks in base.html
finish a hello_buctml page

show Hello BUCTML!
deleted BUCTML.html & fixed hyperlink problem
deleted hello.html

replace it with real_hello_buctml
add 2 divs and change 1 block name

1. add page and content div
2. change block  'main-page' to block 'article'
create class forms in forms.py
move forms.py to folder contact
edit contactus
edit class ContactForm
edit base.html
edit contactus in urls.py
fixed some errors

1. fix some syntax errors
2. fix 'no module for contact.forms': add __init__.py in contact folder
repair some hyperlinks
fix an action attr
fix 3 labels
fix some uncomfortable places
Merge pull request #4 from Qwh/master

finish a contact-us page(without CSS)