metrics: remove old metrics
remove gorilla and its users
remove go-httpclient
remove toml dep
remove goprotobuf
remove contrib
remove go_version
remove vestigial build script
remove pkg/btrfs
remove pkg/http
remove test.sh
remove go-log
remove osext
server: ignore server in build/tests
remove bench
remove pkg/strings
remove fixtures
Documentation -> doc
move ./http to main
config -> cfg

It is extremely confusing to use variables named the same as a package.
Please no longer do this.