Log enhancement

add ssdb cache adapter

Fix cookies in accordance with the "net / http" and Flash usage

fix #1669 and return IO error

# Conflicts:
#	config.go

Fixed #1735 Return nil if config value does not exist or is empty

static file map race bug fixed

Update phone regexp

fix template  read-write lock race

增加178号段

remove file by filename and file suffix

Return nil if config value does not exist or is empty

fixed handle config issue

Need return empty []string  if config value is empty.

split `“”` ==> []string{}, Not []string{“”}

fix bug: session id undecoded when destroy and sesssion memory provider push wrong