Upgrade to Grails 2.4.3

I upgrade to the lastest version of Grails, 2.4.3 and adapt the code to
work with this version.  Mostly, I have to fix scaffolding code and some
issues in test functional test cases.

Furthermore, I re-generate the .project and .classpath files which are
now much cleaner.
Version bump

New version 1.4.11.