fix the datetime error
add yang pages
yang updates
merge the laoyangs
Merge remote branch 'origin/sunset' into jannson

Conflicts:
	mba/templates/person.jinja2
tmp add, being merge
merge origin sunset
merge laoyang pages
for position
Merge branch 'sunset' into jannson
from sunset of all.css
Merge remote branch 'origin/sunset' into jannson
updated logo
from sunset of friend_auth.jpg images
from sunset of friend_auth.jpg images
add for position