Jump to test from JUnit view

Fixed going to spec/feature in JUnit-view by integrating
https://github.com/meysholdt/eclipse_jdt_junit_runners
Update "update site" versions to 1.1.0 & fix mvn bugs
Merge pull request #136 from SebastianPoetzsch/jump_from_junitview

Jump to test from JUnit view for Feature steps and facts.