TravisCI integration

These changes contain configuration for TravisCI service, allowing at least rudimentary public CI with three test stages. After enabling the GitHub hook, the (unit, integration, system) tests would be run at each commit. [Running example from my fork](https://travis-ci.org/pdudits/lightfish) shows failing integration and system tests, which corresponds to what I see on my local machine. 

`MonitoringAdminIT` fails because `MonitoringAdmin` gained much more dependencies in the meantime, I haven't looked for exact cause of the system test failure.