Merge pull request #1 from henrybear327/patch-1

Update year in footer XD

update db qeury cache

add db query cache method

update env example

update packages

add facebook oauth

update packages and update form macros

update env example

update 403 message and add virustotal_link_to_id function

increment version

update packages and add virus scan for courses exams files

increment version

update packages

remove non-use scripts