Plone.formwidget.recurrence

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- plone.app.widgets support: Let the z3c.form widget's get_start_field method
prefer 'name' attribute over the 'id' attribute. Looks like, with
plone.app.widgets the rendered input field doesn't have an 'id' attribute any
more. Also, integrate latest changes from jquery.recurrenceinput.js, which
also handles 'name' attributes when trying to get the start field from the
surrounding form.
[thet]

- Register plone.app.jquerytools dateinput JavaScript for the 'default' bundle.
plone.app.widgets registers it for 'deprecated', but we need it here and it
can peacefully coexist with the new pickadate.
[thet]

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- Change boolean expressions to conditional expressions, which to avoid wrong
evaluation if the "and" path test evaluates to False. Really fixes 10.
[thet]

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- Fix Problem in AT based widget with a wrong first_day offset, where it didn't
display weekdays properly. Fixes 10.
[thet]

- Replace test dependency on plone.formwidget.datetime with plone.app.z3cform.
[amleczko]

- Added basque translation.
[erral]

- Add some missing german translations.
[msom]

- Depend on own extra requirements in test extra in setup.py.
[thet]

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- plone.app.widgets compatibility.
[garbas]

- Add Dutch translation.
[khink]

- Show [1-N] in current batch instead of always [1-10]
https://github.com/plone/plone.app.event/issues/77
[khink]

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- Update jquery.recurrenceinput.js:
[thet]

- Fire change events when rrule value is updated. [deiferni]
- Default to one week of daily occurrences, instead of 10. Fixes 5. [gyst]
- Fix ie8 startdate and fire events when changing checkbox values [deiferni]
- Make "repeat forever" button optional [deiferni]
- When there is no recurrence rule, the edit button should show "Add...", not
"Edit..." [thet]
- Remove ambiguous recurrence rule checkbox, which lead to UX confusion due
to double negation (unchecked checkbox said "no recurrence rule") and add
instead a "Delete" button. [thet]

- Add a widget parameter to optionally disable the repeat forever option
[deiferni]

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- Return a 400 Bad Request to bots calling json_recurrence. Fixes 4.
[href]