Made names consistent in configuration examples

Chose the shorter variant
Update testing.rst

The syntax provided for testing a Jersey client needed updating for the latest version of Jersey.
Merge pull request #772 from WilliamHerbert/master

Update testing documentation
Merge pull request #771 from dminkovsky/patch-1

Made class names consistent in configuration examples
use correct migrations command-line option in release notes
Merge pull request #773 from stve/release-notes-fix-for-migrations

Use correct migrations command-line option in release notes for DW 0.7.0