ajax refresh gc message

Added the UI for Admin monitor page

Update ctx.WriteString multiple buf output

Add CustomAbort() for Controller, support status code and body

change time format for migration module

improve the 'geturl'

If we have a url mapping like this:
`beego.Router(“/test”, &controllers.WeightController{},
"get:GetDetails”)`
when u use `UrlFor(“WeightController.GetDetails”, “foo”, 1, “bar”, 2 `,
it should return `/test?foo=1&bar=2` rather than `/test`.