Encounter content type

[eaton]

Spinoff from #37 — create an 'encounter' content type, associated with either a session or a campaign, that includes:

• A description
• Optional images (for atmosphere or maps)
• Any number of referenced PCs/mobs, including the ability to reference multiples of a given NPC (5 thugs, for example)
• The ability to generate a skillsheet and combat scratchpad for all those present
• The ability to mark the encounter as GM-only to ensure players don't peek too early

[eaton]

Voila! GM-creatable encounters are now supported. They can only be attached to campaigns right now, and they default to GM-only. Next steps include a simple "bookmarking" feature that will let a GM go around, accumulating NPCs/creatures they want in an encounter, then create one from the bookmarked items. For the time being, it works much like any other relational content on the site: Create an encounter, auto-complete the NPCs/creatures/etc you want to be part of it.

[eaton]

Also: The Encounter content type also lets you assign a custom name to each combatant. That makes it easier to bang out a quick combat sheet even if you're just reusing existing NPC templates or pregen characters. On the combat sheet, the custom names you enter will override their default ones. For example:

[eaton]

This had a caching bug that caused multiple references to the same character (with different names) to reuse a single name. Fixed, and deployed!