Plone.formwidget.masterselect

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- Use zope2.View instead of cmf.AddPortalContent for masterselect-jsonvalue
view. In an edit form, the user doesn't necessary have the Add portal content
permission.
[vincentfretin]

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- Fix side-effect when updating field.vocabulary. Do now a copy of the field
before changing the vocabulary.
[vincentfretin]

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- Translate the "vocabulary" slave field terms (like "No value") when entire vocabulary is replaced.
[sgeulette]

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- jQuery 1.9 compatible.
[vincentfretin]

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- masterselect.js is now cacheable.
[vincentfretin]

- Move to plone.app.testing. Migrate selenium tests from windmill to
robotframework.
[saily]

- Add travis and coveralls integration.
[saily]

- Documentation updates. Fix rst error in ``CHANGES.rst``. Add an example
to ``README.rst``.
[saily]

- Add egg-contained buildout.
[saily]

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- Do not use fast transition on initial trigger.
[thomasdesvenain]

- Master select features work when form is loaded in an overlay.
[thomasdesvenain]

- Fix bug when masterselect is in a fieldset that is not visible.
[cedricmessiant]

- Add master select radio widget and ability to specify a master Selector
instead of masterID [ebrehault]