WIP mod to attempt to tweak the minutemen's quests to lower the actual
amount of quests Preston gives, in addition to making the various
(radiant) settlement defense quests stop bothering the player. You
shouldn't have any minutemen quests when you enable this mod, starting
with a new game is recommended.

This mod is intended to be a successor to the "Disable Minutemen Radiant
Quests" which also disabled Recruitment quests, and the Preston quest
giving system, which really screwed with the game, especially with the
minutemen's special quests. Preston's quest giving really shouldn't be
disabled, because it breaks most of the rest of the game, but it can be
limited.

Current changes:
    max active mm quests 3 -> 1
    mm rand event chance 25 -> 15
    mm rand event chance after taking castle 75 -> 60

    all radiant defence quests require player to be less than level -1
    there is now a counter on the rand event activator
    (2 events would have to happen in the unmodded game for 1 event to
happen with the mod)