New Content - Implemented Yet another unexpected plural

Unexpected plural of 'warbear officer requisition box' found: warbear officer requisition boxes

r13651

try r13652.

Seeing as knife -> knives and box -> boxes are pretty standard English pluralisations is there any way the default Mafia idea of adding an "s" to the end for plurals could be amended to allow for other standard pluralisation methods in order to minimise the need for this sort of thing in the future?