Update validators.go

Support virtual operators paragraph 170！

fix FilterHandler crash issue 

Filter Handler will crash with error assignment to entry in nil map , params from function Tree.Match() maybe nil.

pull from stable

Revert "Revert "fix multiple filters execute issue""

Revert "fix multiple filters execute issue"

fix multiple filters execute issue

ex:
	beego.InsertFilter("/*", beego.BeforeExec, FilterLoginCheck1,false)
	beego.InsertFilter("/*", beego.BeforeExec, FilterLoginCheck2)

In function  FilterLoginCheck1 , I'll write data via ResponseWriter, and w.started = true
FilterLoginCheck2 won't be executed, it should be.

Develop

support eq&ne for orm

Don't overwrite the params from function  ValidRouter

just add new params to context.Input.Params

Let filter function get more params info from ctx.Input.Params

remove space after int()& add sort for commentsRouter file

Add GetMulti method for Cache interface

Execute AUTH command when the "password" is configured