make Content-Type header more human-readable

beego1.4.2，beego.AppConfig.Strings与老版本代码不兼容问题  

Reword message about reloading packages..

count log file lines

SubDomains function bugfixed

Return the response directly if it's a options PreflightHeader request

1.4.1 released

type Test struct {
    Date    time.Time    `form:"Date, 2006-01-02"`
    Save    bool            `form:"Save"`
}

add config ListenTCP4

when user want to listen on the TCP4, because now almost use the ipv4.
but default lister on the ipv6