modules access support
Merge branch 'raysmond'
add all group categories module
Merge branch 'raysmond'
Merge pull request #27 from junshiguo/group

detail changes to group related pages; add edit page which is to be done
update register
Merge branch 'raysmond'
Merge branch 'master' into raysmond
add category selection in building group form
Merge branch 'raysmond'
add md5
Merge branch 'raysmond'
update messages
Merge branch 'raysmond'
build group validation.
Merge branch 'raysmond'
modified actionBuild() in GroupController
Merge branch 'raysmond'
update database. fixed bugs on registration. upload group picture
Merge branch 'raysmond'