Test runner security

[moschlar]

At the moment, the only security measure in place by default is the timeout limit for compiling and running and the user privileges under which the server runs.

• Allow privilege dropping to different user account for running tests - Code Execution Sandbox #130
• Introduce resource limits
• Determine how to easily run tests on a different machine than the web application - Distributed test running #141
• Explore language specific security/sandboxing mechanisms