Refactored:
+FactWrapper,Object,AttachedFuncFact
+Fact.SendToMMT: asynchron

BugFix:
+ OMDoc/RAW in Scroll msg => added RAW

Prtially new Naming method for FactPrefabs:
+using new logic in FactOrganizer

Bug Fixes:
+FactObject and Circlecollider not the same;
+missing behaviour (deleted)
+Z-fighting for CircleFact
+Annoying Warnings and Errors

Known bugs:
+FactObject and Circlecollider not the same;
+Many gadgeds have wrong layermask
+Label get confused after loading
+missing behaviour (deleted)

Merged MMTDeclaration and ScrollFacts
Bug fix: Save/load, Circle Spawn/Collider

Bug Fixes: reset with exposed facts, colission detection in CanonBallCalculator
Known bugs: cannot guarantee closed set for exposed Facts
Added GlobalFactDictionary for ease of use

Moved FactScreen to top right corner
Default visibility is off
Only for Desktop UI (not Android) right now

Fixed a Bug where Facts stay assigned in scroll even when deleted in the world. Now they also are deleted in the scoll.
There are still issues with the dynamic scroll assignment however.

Removed some unused functions implemented for the invalid assigned fact animations.

Added some comments to popupbehavior script

Added an animation at the wrongly assigned fact conteiners in scroll

Additional changes:
- Refactored Prefabs/UI/Facts project structure

The FactExplorer Window shows other facts that reference the selected facts and also shows facts referenced by the selected fact.

WorldFactInteraction:
Hovering over a worldspace fact in mathmode now shows the fact display. This display can be dragged into scrolls like facts from the fact display.

Additional changes:
- WorldFactInteraction added to Mathmode canvas, as it should only be active if the canvas is active
- Sorting order of Math canvas increased to 10 (from 0), so that dragged facts will always be displayed on top
- DisplayFacts Dictionary is now static and thus available from other classes that need the fact display (this is not ideal and should maybe be extracted)
- DragHandling: dragged variable now public, as this is of interest to other classes

Removed unnecessary debug statements.

+New Polymorphismus for JSON serialization for Solution-/FactOrganizer and Fact; +added using keyword for UnityWebRequest

Suggested by unity warnings
Old version worked as well

Changed EventHandling to OnPointerDown as otherwise scroll events were not passed through
Changed Scrollscreen layout to GridLayout under new 'Scrolls' Gameobject
Improved Scrollscreen layout