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
upgraded el version to 3.0.0
Merge pull request #775 from cemo/fix-el-api

Upgrade to EL 3.0.0
Remove unneeded throws declaration

* ClassNotFoundException is checked,
* but is not thrown by this method
Merge branch 'remove_unneeded_throws' of github.com:LeekAnarchism/dropwizard into LeekAnarchism-remove_unneeded_throws
Revert file mode change of DataSourceFactory
Add test for handling invalid JDBC driver class in DataSourceFactory
Remove obsolete ClassNotFoundException from DB-related classes
Update docs regarding ClassNotFoundException in DB-related classes
Merge branch 'LeekAnarchism-remove_unneeded_throws'
Bump 'version' and 'release' variables in docs to 0.8.x