Fixed Content-Type of getFileContents()

Added getMimeType
Merge pull request #165 from marcelometal/mimetype

Fixed Content-Type of getFileContents()
handler_test: make test more reliable

Linux gives "text/x-sh", and not "application/x-sh".
Added support to redefine users of a repository

Thanks, @scorphus :)
Merge pull request #166 from ricardodani/master

Added support to redefine users of a repository
Extend Rename to support update in PUT repository/name

Thanks @scorphus for help in the patch ;)
Merge pull request #168 from ricardodani/master

Added support to update repository data
webserver: bump to 0.5.1
repository: make test more reliable
check-fmt: do not try to install anything

go get will try to install vet on GOROOT, which we don't have
permissions to do in our CI.