Merge pull request #6 from lampslave/master

Изменения оформления
fixed robots.txt
Merge remote-tracking branch 'origin/master'
yandex verification code
specific robot instructions for yandex and google
remove obsolete php url from crawl
sitemap
updated bootstrap version
personal messages functionality
links for writing personal messages
use shell script for gunicorn operations
fixed paths in fabfile
don't show message link for self posts
upgrade django to 1.6
django 1.6 specific flag for sqlite database
django 1.6 specific flag for sqlite database
test on mysql db
improved translations and added usernames autocomplete
add auth urls in project urls
improved messages