Make room in roster to hire a new candidate

Increase roster size by one for origins where number of brothers allowed in combat equals to number of brothers allowed in roster.

Some origins such as Gladiators or Lone Wolf limit number of brothers in roster to 12, whereas max number of brothers in combat is 12 too. Oftentimes you want to hire a new candidate to see his attribute rolls and talents. You can end up dismissing (due to roster limitation) the current brother with a permanent injury and hiring the new candidate with bad rolls. This mod makes it safe to try a new candidate without dismissing the old battle-hardened brother.

As a side effect, the additional space in the roster allows to accept a new brother during random events.

Note, the mod will take effect upon loading a saved campaign. There is no need to start a new campaign.