Improve text screen for a selected constraint:

• Show the type of a constraint.
• Show the workplane a constraint is in, for constraints which can be both projected to workplane or be free in 3d space.
• Clearly distinguish reference from non-reference constraints.
• Add a checkbox for toggling the reference option.
• When showing requests a constraint applies to, highlight on hover the specific entity being constrained, not just the first one.

Improve text screen for a selected entity:

• Add a link to its request, unless it's the first entity in that request (which would just select the same entity again).
• Add a link to its group.
• Add a link to its workplane.
• Add a link to its style; and hide the style row for entities that aren't stylable.
• Show constraints and measurements (reference constraints) in separate lists.
• For curve entities, show constraints that apply to the points related to the curve, not just to the curve itself.