Add a docker to animation tool, intended to alow edition of shape animations. It includes:
- List to display current animations, change order, duration and type of animation
  - Time line view for advanced edition of start time and duration
  - Live preview of animations
- Widget to add new animations
  - Automatic preview of animations (Can be disabled and Stage remembers your preference)
  - Alternative animation preview using hover buttons.
  - Automatic drawing of motion path icons using shape stored on xml description
  - Automatic loading of predefined animations from a xml file (I have added some predefined animations).
- Basic edition of motion path animations (Some predefined motion path animations have been added on the xml file).
- Refactor of KPrAnimateMotion class (class that loads and saves motion paths)
- Data model to store and edit animations of a document.
- Unit test for the animations data model.

My thanks to Thorsten Z. for the review and valuable suggestions

REVIEW: 106093
GUI: animation tool docker for edition of shape animations