Merge branch 'api2.0' into 'restructure'

Makefile

api/auth.go

api/client.go

api/identity.go

api/messenger/backup.go

api/messenger/backupRestore.go

api/messenger/compress_test.go

api/messenger/messenger.go

api/messenger/notifications.go

api/messenger/precan.go

api/messenger/utils.go

api/params.go

api/params_test.go

api/permissioning.go

api/precan.go

api/send.go

api/user.go

api/utilsInterfaces_test.go

api/utils_test.go

auth/confirm.go