Default to one week of daily occurrences, instead of 10.

It took me hours to hunt this down.
I don't see an easy way to customize this.

Having 10 occurrences is an arbitrary default.
Defaulting to 7 adds up to a week, which makes more sense.

See also https://github.com/plone/plone.app.event/issues/77
Fix indentation.
Add parameter to disable the repeat forever option.

Fix wrong AT widget parameter names used in jquery.recurrenceinput constructor.

Move creation of parameters from the page-template to the widget instance.
That way python can take care of creating a valid JSON object.
Add/Fix tests.

Remove bundle argument from *registry.xml files since the tests run with plone 4.1 which does not support bundle values.
Fix nested lists.
Update changelog/contributors.
Fix typo.
Drop Plone 4.1 support.
Add french translations.
Escape apostrophe in strings.
Add a script to update po files.
pep8
Merge remote-tracking branch 'gyst/master'
Merge remote-tracking branch '4teamwork/repeat_forever_button_parameter'
fix integration of AT widget
merge
fix test setup and make first_day access safer
pep8
upd changelog