Releases for Node displays

First release of 6--2 branch, depends on Display suite module.

Changes since Beta1

- by swentel: added optimized node.tpl file.
- by swentel: added regions css, always nd_footer + option to turn off region css.
- by swentel: added tests.
- by swentel: matrix field + usability per content type/build mode.
- by swentel: custom fields has token support.
- by swentel: new feature: create custom fields per content type.
- #546724 by swentel: refactor code to get rid of views plugin.
- by swentel: renamed ND settings to Settings.
- by swentel: moved custom build modes code to nd.buildmodes.inc.
- by swentel: nd_init.module: remove the check on arg(0) being search.
- by zuuperman: Remove the default <hidden> formatter. Excludes happen by region, not by formatter.
- by zuuperman: Return empty array for default nd formatters.

Note, we don't provide upgrade paths between beta versions, although upgrading shouldn't give much problems between beta 1 and 2