Ps.diazo.realia

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- Fixed manifest file.

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- Add support for plone.mls.listing > 1.7.
- Code cleanup.

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- Add theme-colors for development icons
- Add theme-color for custom slogan
- Auto-balance ListingCollections for cover tiles
- Update documentation
- Minify & speed improvements

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- Bugfix: include webstatics scripts of the Site controlpanel
- Optimized Image behaviour for ListingSummary
- Improve default headline setting (h1-h4)
- IE extended support

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- collective.cover bug-fix
- Add Diazo Parameter for switch on/off full-width slider

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- Full support new ListingSlider
- QoC improvements