More map station messages. Partial rewrite of the Map Station's SpawnMessage function to save space and utilize 2 unused message IDs for Tourian (0x18) and Crateria (0x23).

lines 89 to 129 are optional. they replace the text in message 0x18 and 0x19,
and also make them have the proper number of text rows.

in the future there will be another asm to replace lines 103 to 129.
if you do not care for these changes, comment them out.

None of this uses free space. It's a drop in replacement