Fixed outdated example, Unit testing controllers, testing duplicate form submission
GRAILS-6512: Specify the main difference between integration and functional testing phases
Merge pull request #136 from mieky/GRAILS-6512

GRAILS-6512: Specify the difference between integration and functional testing phases
GRAILS-2871 - data binding docs

Updates to the data binding docs, much of which relates specifically to binding to collections.
Merge pull request #134 from greggigon/master

Fixed example for Unite testing controllers, Duplicate form submission
docs for RESTful URL mappings
Merge remote branch 'upstream/master' into jggug