Monument Template data is erased when world is not loaded

[Rumsfield]

When a monument template is defined in a world that does not get loaded on server start, the kingdom's template is null and things break. Prevent the data storage for sanctuaries from being erased when the world isn't loaded, to preserve the data for when the world gets loaded during a subsequent server start.

[Rumsfield]

The workaround for this problem is to revert the data folder using a backup ZIP file.

To fix this problem, a major rework to the monument template loading code is needed. Towns need to save all necessary monument information (base level, height, travel point) in their own kingdoms.yml entry rather than relying on deriving it from the template info saved in sanctuaries.yml. This part of the code is a rats nest and will take a good amount of effort to unravel and make more efficient and robust. Tabling this issue for now.