more categories, isBaseItem property
item costs (unfinished)
item costs (unfinished)
item costs - still a mess, but seems to be working
item costs calculations - still a mess, but a working mess
fix exporter

(cherry picked from commit 8429c8ad26f462efd664fa9729305ef41c26e91d)
various fixes & improvements

(cherry picked from commit 17693280d44358205cd194511f5f334c770dfea0)
mods from tekkit - simple support

(cherry picked from commit befd78b25f3c9c8b308e21116aec82d300034fbd)

Conflicts:
	common/trks/recipedoc/modsupport/ModSupportHandler.java
	common/trks/recipedoc/modsupport/mods/MekanismSupport.java