Fixed checkstyle problems, mostly using a static call to the formatter.
Updated the taglib of the demo with the latest version.
Removed obsolete import.
Updated the version used for a tag.
Started working on the 3.2.4 release.
Creating official 3.2.3 release.
Creating official 3.2.3 release. Updated dependency upon Josef.
Removed an obsolete import.
Updated to reflect jdk 1.8 for example.
Changed the order of the items so introduction comes first.
