Plone.app.contenttypes

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New features:

- New metadata catalog column MimeType
https://github.com/plone/Products.CMFPlone/issues/1995
[fgrcon]

- new behavior: IThumbIconHandling, suppress thumbs /icons, adjust thumb size, templates adapted
https://github.com/plone/Products.CMFPlone/issues/1734 (PLIP)

Bug fixes:

- fixed css-classes for thumb scales ...
https://github.com/plone/Products.CMFPlone/issues/2077
[fgrcon]

- Fix test for checking if TinyMCE is loaded which broke after https://github.com/plone/Products.CMFPlone/pull/2059
[thet]

- Fix flaky test in test_indexes.
[thet]

- removed unittest2 dependency
[kakshay21]

- Fix issue where contentFilter could not be read from request
[datakurre]

------------------

New features:

- Make use of plone.namedfile's tag() function to generate img tags. Part of plip 1483.
[didrix]

Bug fixes:

- Avoid failure during migration if relation is broken.
[cedricmessiant]

- Fix import location for Products.ATContentTypes.interfaces.
[thet]

-------------------

Bug fixes:

- Add condition so custom folder migration does not fail if there is not
an 'excludeFromNav'
[cdw9]

-------------------

New features:

- Remove browserlayer from listing views to allow overrides from other packages
[agitator]

Bug fixes:

- Use helper method to retrieve all catalog brains in migration code, because Products.ZCatalog removed the ability to get all brains by calling the catalog without arguments.
[thet, gogobd]

- Fix use of add_file in testbrowser tests. [davisagli]

- Render migration results without using Zope session. [davisagli]

-------------------

Bug fixes:

- Use unicode string when .format() parameter is unicode for the field migrator
[frapell]

-------------------

Bug fixes:

- Fix SearchableText indexer, using textvalue.mimeType
[agitator]

- Fix Mimetype icon path. With the removal of the skins folder in
https://github.com/plone/Products.MimetypesRegistry/pull/8/commits/61acf8327e5c844bff9e5c5676170aaf0ee2c323
we need the full resourcepath now
[agitator]

- Show message for editors when viewing Link.
Fixes `issue 375 <https://github.com/plone/plone.app.contenttypes/issues/375>`_.
[maurits]

- Update code to follow Plone styleguide.
[gforcada]

- Update File.xml view action url_expr to append /view
Fixes 'issue 378' <https://github.com/plone/plone.app.contenttypes/issues/378>`_.
[lbrannon]