* fix spelling of lieutenant
* fix translation/localization of npc names in town-hall gui
* reduce squid farm from 0.25%/block to 0.175%/block (minor reduction in
frequency of successful harvests)
* slightly increase the expense of t2/3 courier slips (add some dyes and
metals to their recipes)
* add command baton items as requisite materials for higher-end
command-research.  Need to add other specifics.
* add config option to restrict damage sources to gates to only allow
battering rams (default is to allow all damage)
* add temporary invulnerability to gate when it is hit.. 1/2 second
invulnerability period after it takes damage from any source