* Remove username from UI code
* Remove username from tests
* Remove username from database
* Modify server endpoints for removing username
* Implement backend aspects of removing username
* Update API docs
* Add name to fleetctl
Previously a Go package attempting to import Fleet packages would run
into an error like "server/kolide/emails.go:93:23: undefined: Asset".
This commit refactors bindata asset handling to allow importing Fleet as
a library without changing the typical developer experience.