modifiy DirList's default html format

[tuhao1020]

1. add DirOptions.ShowHidden option to show hidden files or directories or not
2. modify DirList's default html format

• use <div> instead of <pre>
• use <ul> and <li> for file/directory list
• add a link to parent directory
• display current directory
• display file mode string

[kataras]

Hello @tuhao1020 good job! Can I ask if you tried this one with embedded files as well? If it's working fine there I think we are ready to merge it

[tuhao1020]

@kataras yes, I've tested embedded files using go-bindata, it's also working

[kataras]

@tuhao1020 OK that's nice but we have our own version of caching too, I will merge it but whenever you find time please test the Iris FS Cache too (

iris/core/router/fs.go

Line 799 in 9fae837

func cache(fs http.FileSystem, options DirCacheOptions) (*cacheFS, error) {

).