adding isDir bool to FileRef
adding save button for folders to dir_listings

The CSS should be refactored to a css file
Apparently go likes IsDir more than isDir
Merge branch 'master' of https://github.com/seansaleh/sbserv into seansaleh-master
Missed a file when commiting

Didn't add changes to sbserv.go
Merge branch 'master' of https://github.com/seansaleh/sbserv