Change checkstyle to display warning if class javadoc is empty
Use pack200-maven-plugin instead of maven-pack200-plugin
Fix applet problems on Java 7u21

Starting with Java 7u21 Oracle changed LiveConnect interaction:

- JavaScript code that calls into a signed JAR with all permissions
  raises a mixed code warning, if the JAR isn't tagged with the
  "Trusted-Library" attribute
- The "Packages" keyword to access Java classes from JavaScript is
  removed entirely

For more information see:
http://www.oracle.com/technetwork/java/javase/7u21-relnotes-1932873.html
http://docs.oracle.com/javase/7/docs/technotes/guides/jweb/mixed_code.html
Add cardType attribute to JavaScriptTCTokenHandler
Remove unnecessary JavaScriptService thread