Allow creating entity links in Objectives by dragging entities onto inputs

[jflevesque]

Module Version: v0.4.4

Describe the bug Once a quest has been created, it is impossible to edit a task to add a link to an actor, journal or item entry. The task leaves the edit mode once the focus leaves the dialog when we attempt to drag/drop the entity on the task.

To Reproduce Steps to reproduce the behavior:

1. [Optional] Submit any new quest to the quest log.
2. In the Quest Log, click a quest to open the quest details dialog
3. Add an objective, which will reference an actor, ex. "Find X".
4. Click on the Actors tab
5. Find the actor X
6. Drag and drop actor X to the task
7. Nothing happens.

Expected behavior On step 7, actor information should be added to the task it was dropped on.

Foundry Version: 0.6.4 Electrum

Game System: dnd5e

[Forien]

Entity links have to be manually typed in (or copied from rich text editors where you can drag&drop them). It's like the Chat Log, you can't create link by dragging actor's there.

Therefore it's not a bug. However, I'm changing it into feature request and will add support for this :)