Plone.app.portlets

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- Remove hard dependency on Archetypes.
[davisagli]

- accessibility improvements for screen readers regarding "more" links, see
https://dev.plone.org/ticket/11982
[rmattb, applied by polyester]

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- Changed the permission for members to be able to add portlets
to their dashboards. ( https://dev.plone.org/ticket/11174 )
[credits to buchi and jstegle, applied and tests by frapell]

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- Prevent buggy RSS feed to break page display.
[patch by dieter, applied by kleist]

- Fix inherited local portlets for objects allowing locally-assigned
portlets which are contained by an object that does not.
[mitchellrj]

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- Do not display 'Manage portlets' when using portal_factory.
https://dev.plone.org/ticket/12376
[runyaga]

- Fixed the two high priority scenarios (global sections viewlet and nav
portlet) of http://dev.plone.org/ticket/11189.
[fulv]

- Reverted commit 5cb41ffea to fix 12279 and added a test for it.
[zupo, jcerjak]

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- Fixed issue where the events, news and recent portlet would fail
with a setting of no items (zero) shown due to a catalog sorting
assertion.
[malthe]

- Avoid empty <ul> tag in navigation_recurse.pt if bottomLevel is set.
[gaudenzius]

- Enable possibility to delete portlets with missing implementation
[do3cc]

- Replace use of deprecated skin template prefs_group_details with
usergroup-groupdetails.
[stefan]

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- Improve tests readability. Merged from branches/2.1
[gotcha]

- 'placeholder' attribute for the search portlet's field instead of the custom
JS handling of the same functionality.
[spliter]