Import Fixes and UI/Visualization Work

This is primarily import cleanup work that I found issues with, visual changes to make things look nicer/more logical, and removing a couple of outside loading requirements in case of spotty connections.

Changes -

• Import resolution now separates matches from this world and individual compendiums. Folder details are shown alongside the entries, so matching names are easier to tell apart.
• Added a styled dropdown to import resolution with keyboard navigation and search by typing.
• Visual cleanup to Cast groups, Threads, and search results. Group headings and selected entries are clearer, and Cast cards with missing links have a distinct portrait outline. Basically make things look more visually clean.
• Additional localization for pin editing and document messages, including clearer messages when a PDF or Word document can't load.

Fixes -

• Merging an older export no longer overwrites newer notes on an existing Cast card. The existing card takes priority when the same card is present in both.
• Markdown rendering and map pan/zoom now load with the module instead of downloading their libraries from an outside site when Foundry starts. This removes that extra network dependency and the wait for those libraries to arrive as well as solves spotty connection issues.