fix bugs, update codes
update
delete useless file
move method: check permission method move to user model
update relatived template due to last commit
add StaticContent Model
update utils.php, helper to load json
rename utils.php => Utils.php
fix due to new Utils class
modified introduction module
clean overview
improve StaticContent
update controllers
add html method
update codes
update
clean research
admin static
rename
improve model of ResearchStaticContent