innText update of groups.json

String change. Adds new inn message as a first step toward #3627. This is combination of the proposed messages I proposed there, and incorporates the user's name:

"How's your stay in the Inn, <%= name %>? To protect you, your daily list is frozen. Your checkmarks won't be processed or cleared until tomorrow (the day after you check out). Be careful, if your party's in a Boss Battle, their misses will hurt you! Also, you won't hurt the boss. Ready to leave? Check out."