Zmiany w gui. Poprawka concurrency
Merge remote-tracking branch 'origin/master'

Conflicts:
	trunk/common/src/main/java/pl/edu/pk/zpi/plagiator/runner/ConcurrentRunner.java
	trunk/gui/src/main/java/pl/edu/pk/zpi/plagiator/content/panel/AddDocPanel.java
Merge remote-tracking branch 'origin/master'
Zmiany w gui. Poprawka concurrency
Merge remote-tracking branch 'origin/master'
GUI. Wyświetlanie wynikow.