Overall code style fixes

This PR incorporates various code style fixes in entire jbpm-console-ng code base. The code style from droolsjbpm has been used. 

"mvn clean install" is working and also the GUI functionality was briefly checked if there are no major issues.

Following is the list of fixes/enhancements:
 *  missing license headers added
 *  windows line endings removed from several files
 *  missing @Override annotations added
 *  removed @author javadoc annotations
 *  fixed formatting in Java, HTML and XML files
 * max. line length 128