cmd/geth, cmd/swarm: sort commands and flags by name (#3462)

cmd/geth/main.go

cmd/swarm/main.go

vendor/gopkg.in/urfave/cli.v1/CHANGELOG.md

vendor/gopkg.in/urfave/cli.v1/README.md

vendor/gopkg.in/urfave/cli.v1/app.go

vendor/gopkg.in/urfave/cli.v1/appveyor.yml

vendor/gopkg.in/urfave/cli.v1/cli.go

vendor/gopkg.in/urfave/cli.v1/command.go

vendor/gopkg.in/urfave/cli.v1/context.go

vendor/gopkg.in/urfave/cli.v1/errors.go

vendor/gopkg.in/urfave/cli.v1/flag.go

vendor/gopkg.in/urfave/cli.v1/help.go

vendor/vendor.json