add articles app
add article
add category
finish articles
simplify lecture app
simplify activity app
rebuid organization
start to change page style
index.html
fix some problems
amend
expand {{ form }}
add magazine
add pdfjs in static/
fix some problem
add permission check
Added feature: highlighting on current nav
Merge branch 'newtem' of https://git.oschina.net/doyoubi/stucampus into newtem
modify lecture, activity
amend spider