Join in progress checkbox issues

[ctm]

Fix so the checkbox that a player gets for an in process event has a useful tooltip and is only enabled when it can work.

This is a continuation of #1241, which I've closed out now that I have fixed the server to reject illegal requests to join. The things that need to be done are:

• [x] Make it so the number of re-entries remaining is displayed when the player has at least one remaining
  • [x] Add the number remaining to the message
  • [x] Make sure that the number remaining decrements as one joins
• [x] Make sure the checkbox is disabled with a tooltip of "You have no more re-entries" (or perhaps "You've used all N of your re-entries" when the player has no more re-entries left
• [x] Make sure the checkbox is disabled and an appropriate tooltip is present once payouts start
  • [x] push payout-start when event is sent over
  • [x] update payout-start when Won message is seen
• [x] Fix issue where it claims "You're already playing" when the lobby window is refreshed (this happened when I was testing payout-start after the payouts have started; I don't yet know exactly what causes it)

[ctm]

The code for what we currently do is in lobby::events::running::event_row::Props::disabled. I'm not sure we're yet watching enough messages to provide as much information as possible.

[ctm]

I'm deploying now, since all the changes I've made today are useful. I still think there are places where the tooltips can provide better information, but I've fixed the bugs I've been aware of and new ones I've found. I'll leave this open, but I'm removing the bug label..

[ctm]

I added some more info to the tooltip for a disabled join box due to there being no re-entries left. That rounds out my changes, so I'm deploying now.