* Remove unnecessary semicolons.
* Remove empty methods that only call super methods.
* Replace String concatenation with StringBuilder.
* Fix possible NullPointerException on String comparison.
* Remove TODO comments generated via IDE.

Change-Id: Id2d2ebd29386080715fd743f81fbfae3a4a0a5ce
Reviewed-on: https://gerrit.libreoffice.org/2915Reviewed-by: Chris Sherlock <chris.sherlock79@gmail.com>
Reviewed-by: Michael Meeks <michael.meeks@suse.com>
Tested-by: Michael Meeks <michael.meeks@suse.com>