cmake: elliptics_react is compiled into elliptics_monitor

- libelliptics_react is now builds as a part of elliptics_monitor instead
of linking with it.
- elliptics_react removed from export list
- libelliptics_react.a removed from debian and rhel install list
Merge pull request #427 from IIoTeP9HuY/master

cmake: elliptics_react is compiled into elliptics_monitor