Bobtemplates-ecreall

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- Nothing changed yet.

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- Coverage and integration with coveralls.
[thomasdesvenain]

- Use products class variable in the layer to install several products.
[vincentfretin]

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- Add robot tests.
Update bootstrap.py in generated packages.
Use IDefaultBrowserLayer instead of IDefaultPloneLayer.
[vincentfretin]

- Install testing profile in test layer.
[cedricmessiant]

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- Add plone_addon_nested template.
Use Plone 4.3.1 as default for templates.
Fix travis build for plone_addon template.
[cedricmessiant]

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- Nothing changed yet.

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- Many fixes and enhancements to plone_addon template
[cedricmessiant]