Plone-app-caching

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- Fix packaging issue.
[esteele]

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- Handle caching of resource registries in RAM cache by not storing empty
bodies in the RAMCache
[eleddy with major tseaver support]

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- Properly handle a changed configuration from with etags to no etags by
forcing a page refresh
[eleddy]

- When not caching with etags, don't sent an etag header to stop caching
[eleddy]

- When there was an error like Unauthorized, 200 status and empty body would be
cached in RAMCache instead of not caching anything.
This is due to a bug with Zope 2.13 publication events :
response.status is not set when IPubBeforeAbort is notified.
Fixed by using error_status stored on request by plone.transformchain.
[gotcha]

- Added 12 translation strings for ruleset's title and description. Corresponding translation
strings have been added in plone.app.caching-manual.pot in PloneTranslations
[giacomos]

- Added 6 translation strings for caching profiles' title and description. Corresponding translation
strings have been added in plone.app.caching-manual.pot in PloneTranslations
[giacomos]

- Changed wrong i18n domain in the messagefactory. plone.caching -> plone.app.caching.
[giacomos]

~~~~~~~~~~~~~~~~

- Use the `userLanguage` ETag component in place of the language ETag component
in the default configs to allow ETags to be used for anonymous users with
caching.
[elro]

- Add the SERVER_URL to the RAM cache key.
[elro]

- Declare `plone.namedfile.scaling.ImageScale` to be a `plone.stableResource`.
[elro]

- Add MANIFEST.in.
[WouterVH]

- Fixed tests failing on Zope 2.13 due to the HTTP status no longer being
included in the response headers.
[davisagli]

- Add an ILastModified adapter for FSPageTemplate as the FSObject adapter
would otherwise take precedence.
[stefan]

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- Added `News Item` to the list of `purgedContentTypes`, so the image field
and its scales gets purged.
[stefan, hannosch]

- Associated `file_view`, `image_view` and `image_view_fullscreen` by default
with the `plone.content.itemView` ruleset, since none of them is the default
view of their respective content type, they didn't get the automated
handling.
[stefan, hannosch]

- Added purging for plone.app.blob's BlobFields.
[stefan, hannosch]

- Fix documentation to refer to the correct `resourceRegistries` instead of
the singular version.
[stefan, hannosch]

- Use plone.registry ``FieldRefs`` to manage parameter overrides. This
requires plone.app.registry 1.0b3 and plone.app.registry 1.0b3 or later.
[optilude]

- Update distribution metadata to current best practice.
[hannosch]

- Added an etag component to track the existence of a copy/cut cookie
[newbery]

- Fixed various i18n issues.
[vincentfretin]

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- Add an option for "anonymous only" caching to the default operations.
This is a simple way to switch off caching for logged-in users. See
the README for more details.
[optilude]

- Add basic plone.namedfile caching rules, if plone.namedfile is installed
[optilude]

- Implement lookup based on portal type class/interface as well as name,
and set up defaults for items and folders.
[optilude]

- template fixes for cmf.pt compatibility
[pilz]