documentation updates to "What's new" guide
fix wrong version
more upgrade notes
simple updates
more doc on dependency changes
Merge pull request #140 from bobbywarner/master

Simple Updates
note about the --debug-fork command line argument
Merge branch 'master' of github.com:grails/grails-doc
remove Ant build file
Merge branch '2.1.x' into 2.2.x
Merge branch '2.2.x'
Merge remote branch 'upstream/master' into jggug
fixed a wrong property name in mapping definition of customHibernateTypes
Merge branch '2.2.x'
skip compilation, since it isn't needed
add some notes on new binding customization support
change class name
minor changes
fix typo
GRAILS-10100 - document grails.databinding.dateFormats