Plone.app.contentmenu

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- Change test-setup to allow testing AT and DX.
[pbauer]

- Fix Dexterity tests to use plone.app.contenttypes' browser layer. Fix tests
to work with new plone.app.contenttypes unified view names.
[thet]

- Don't show the menu-item to add content to a folderish default_page if no
content can be added to it.
[pbauer]

- pat-modal pattern has been renamed to pat-plone-modal
[jcbrand]

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- Fix "Manage Portlets" menus not appearing for "Site Administrators".
[rpatterson]

- Integration of the new markup update and CSS for both Plone and Barceloneta
theme. This is the work done in the GSOC Barceloneta theme project.
[albertcasado, sneridagh]

- New toolbar markup based in ul li tags for the contentActions menus.
[albertcasado, sneridagh]

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- Add csrf tokens to menu urls that need it.
- Allow custom modal attributes for more links
[do3cc]

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- Add markup changes related to new Barceloneta theme.
[bloodbare]

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- Don't break if there's no portal_actionicons tool.
[davisagli]

- Ported tests to plone.app.testing
[tomgross]

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