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.

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