Plone.app.layout

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- Fixed AttributeError for FilesystemResourceDirectory
See https://dev.plone.org/ticket/13506
[kroman0]

- Check appropriate permission for 'Revert to this revision' button.
[danjacka]

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- handle missing feed type so it doesn't throw an error
[vangheem]

- handle absence of ACTUAL_URL on request.
Fixes https://dev.plone.org/ticket/13173
[vangheem]

- Also show history on the folder contents view
[vangheem]

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- Changed the behaviour of the title viewlet for items in the portal_factory.
See https://dev.plone.org/ticket/12117
[alert]

- Fix an edge case where getNavigationRootObject could loop infinitely.
[davisagli]

- Add 'subsection' prefix to the all sections below to avoid classnames
that start with digits, which is not permitted by the CSS standard.
[erral]

- Display publication date only if Effective date is set, regardless of object
state. Tickets:
https://dev.plone.org/ticket/13045 and https://dev.plone.org/ticket/13046
[vipod]

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- Add Language='all' as a keyword argument to avoid LinguaPlone deleting it when
it patches the catalog
[erral]

- Use context object's url to create the cache key instead of the portal_url.
[erral]

- Avoid extra space at the end of icon alt attributes.
[davisagli]

- Merge plip 12905 to provide more body classes
[vangheem]

- adding user roles to body class, eg: userrole-anonymous, ...
[garbas]

- Use normalized template name for body class since dots are not a good idea in classes
[daftdog]

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- Icons accessibility improvement. Append mimetype name to img alt attribute
[toutpt]

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- Change breadcrumb separator to / (slash character) for accessibility, and added SEO benefits.
see https://dev.plone.org/ticket/12904
[polyester]

- Add language attribute to presentation.pt for WCAG 2.0 compliance.
See https://dev.plone.org/ticket/12902
[rmatt, polyester]

- Display publication date in author byline:
https://dev.plone.org/ticket/8699
[vipod]

- Remove hard dependency on ATContentTypes.
[davisagli]

- Correctly hand action URLs not ending / [phrearch]

- Removed obsolete 'define-macro' and 'define-slot' from viewlet page templates.
Fixes http://dev.plone.org/ticket/11541.
[kleist]

- nextprevious/nextprevious.pt: Use "view/site_url" instead of deprecated "view/portal_url".
Closes http://dev.plone.org/ticket/12720.
[kleist]

- Translate alt attribute of image tag generated by icon
[toutpt]