Jump to test from JUnit view

Fixed going to spec/feature in JUnit-view by integrating
https://github.com/meysholdt/eclipse_jdt_junit_runners

For this feature we used the 'eclipse_jdt_junit_runners' plugin from Moritz. We have decided to add this plugin to the Jnario source base almost unchanged to avoid unnecessary installation problems. We also decided to maintain original version number (0.1.0) keep upgrades simple.

Is it ok for you from the licence point of view?

Cheers,
Sebastian, Boris