Rename the tracking field other to max to reflect actual function

Due to it's name, many people recently have been confused by the function of the "other" field in the spigot.yml and treating it as all other non-listed entities, even though misc should cover this function.

This commit amends the patch to change the other field to a name that better reflects it's usage as the maximum cap on all other fields. It is even referred to as max in the other source fields, so I don't see why it shouldn't also be called max in the config.