Initial commit
add config and global
add global log for web
add time and date func
add Conn in global
add mail log
add email log to config
add db to config
add log level to config
add mail checker in setup server
refactor config getter and add formal tag into config
use fork db lib
add date log
refactor log append
add access log
refactor date log
add mail log in access log
add before handler
add before filter
refactor before funcs