Bugfix(Moria): The themes themed chests were not being calcualted correctly (found by "Runningaway").

Signed-off-by: nppangband <nppangbanddev@verizon.net>
Bugfix: Uniques marked for a guild quest could still be placed outside of the quest level, potentially causing game crashes.

Signed-off-by: nppangband <nppangbanddev@verizon.net>
Signed-off-by: nppangband <nppangbanddev@verizon.net>
Merge pull request #50 from nppangband/work_in_progress

Sync with Work in progress