Design-plone-theme

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- Upgraded ellipsed [nzambello]
- Performance fix for ellipsed calls [nzambello]

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- updated redturtle.tiles.management dependency version [daniele]
- removed carousel markup on news tile render when not needed [giulia]
- fixed icon home in breadcrumns [giulia]
- Added styles for tables [nzambello]
- Fix styles for events calendar view [nzambello]
- Fixed tile sizes for smaller screens [pnicolli]
- Upgraded ellipsed [nzambello]
- Changed collection UID to tile ID for carousel wrappers [nzambello]

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- Added registry css_styles definition purge attribute [nzambello]

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- Fix for IE: play icon in video collection tile was not displayed [nzambello]
- Hidden toggle button for navigation if this is empty [nzambello]
- Added tiny templates for agid tables and relative styles [nzambello]

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- Added instagram for social header viewlet [nzambello]

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- Fix relateditems viewlet customization. Now handle empty relations.
[cekk]
- Fix tiles_page_view condition for text field.
[cekk]