named top-level processes

Signed-off-by: Christian Lüthold <biocodr@gmail.com>
deleted ProcessError

Signed-off-by: Christian Lüthold <biocodr@gmail.com>
named all process steps

Signed-off-by: Christian Lüthold <biocodr@gmail.com>
named processes in ProcessFactory instead of managers

Signed-off-by: Christian Lüthold <biocodr@gmail.com>