Merge mistval_dev to dev

[mistval]

• Map editor improvements, including ability to edit a map without leaving scenario (via the map button)
• "Send" button in chat is replaced with a "stop" button while a character is speaking or an image is generating. This immediately aborts the generation. The pause button at the top, on the other hand, finishes the current generation before pausing.
• Display and edit single-character conversation summaries in Character Overview (an unintended omission I somehow missed until now)
• Promotion of conversation end judge context to a "focused" context, making it easier to make the judge determination from a character perspective rather than a neutral one, if you want to (default prompt doesn't do this). E.x. "Based on the transcript and 's personality, do you want to end the conversation now?"
• Fixed a corner case bug in conversations where deleting messages such that a "joined the chat" message was first could cause that joining character to be incorrectly passed an empty message to respond to.
• Documentation updates