Added missing active, once call.
Fixed several bugs in handling tcp messages.
Merge pull request #29 from SkewedAspect/bug-to-login

Bug to login
Added a non-persistent option to the check_setup

During testing, it may be desireable to have a ram-only copy of
mneisa running, thus the check_setup/0 has a friend, check_setup/1,
that will allow it to be started without persistence.