Ftw.theming

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- Deprecate legacy breakpoint mixins and variables. [Kevin Bieri]
- Remove deprecated variables. [Kevin Bieri]

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- Avoid using freeze in test_cachekey_refreshes_when_navroot_changes
for plone 5.1, since we get a ReadConflictError. The value of the test does not change if we remove the freeze context manager. [mathias.leimgruber]

- Implement Plone 5.1 compatibility [mathias.leimgruber]

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- Introduce webkit-only mixin. [Kevin Bieri]

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- Fix escaping of font type on fontface mixin. [Kevin Bieri]
- Provide background option for tab-list mixin. [Kevin Bieri]
- Introduce hyphenation mixin. [Bieri Kevin]

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- Add uninstall profile [raphael-s]

- Make sure the default profile is installed when installing ftw.theming with
quickinstaller. [raphael-s]

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- Update font-awesome to 4.7.0.
[elioschmutz]