move package person from srclib to go-sourcegraph
remove doc pages (currently unimplemented)
move db_common from srclib
update doc to remove reference to old type
use sourcegraph import path for go-nnz
rename PeopleService to UsersService, make Person represent only shared fields between users and transient committers
Person ShortName
add User.Person conversion method
add People.Get
Merge pull request #23 from sourcegraph/move-person-from-srclib

Move person from srclib