Additional new header features

Registered by Tim Peeters on 2014-06-13

Add additional features requested by design to the new app header.

Whiteboard

(?)

Work Items

Work items:
[timp] Sections in header divider: DONE
[kalikiana] New visuals to show tabs and overflow actions (instead of popover): DONE
[timp] Header modes (flickable/fixed/overlay/hidden): DONE
[timp] Configurable background color: DONE
[timp] Configurable text and icon color: DONE
[timp] Selection state: DONE
Support richtext format in Header text: DONE
[timp] Reduce size of header on phone in landscape orientation: DONE

Dependency tree

* Blueprints in grey have been implemented.

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