Daily update - crypt, time of day, chat enhancements

Today I added a small crypt level.  I'm still working on the lighting, as UE4's idea about global illumination is different from mine.  The sun can magically penetrate walls!  So anything indoors or underground has to be worked around with post processing volumes and if you dont do it right the transition can be really bad.  Anyway I got it to about where I like it and even added some flickering candles.  The entrance is a bit wonky but hopefully I'll be able to bring on a level designer once this thing is stable to fix up these types of things.

I added time of day cycles based on server time transmitted to the client, so all users experience the same time of day (or night).  The night illumination is a bit dark so I'll probably adjust that tomorrow.

I enhanced the chat history to say "me: " for anything that the user types, added a scrollbar and scroll to the end when it starts wrapping and suppressed empty line chats.

Most of the day was taken up with the NPC logic, pathfinding, etc as documented previously.  We also lost power *again* so that was 3 or 4 hours wasted.

Tomorrow I'm going to add a dragon and goblin NPC and work on simple combat, animations, death handling, corpse decay and respawn and possibly very basic inventory and loot.  If I get through those tomorrow I'll work on gather nodes Sunday - mining, picking herbs, etc.