removeQuestProgress dialogue reward type. Initiallized the GDEVisitor
class to help with finding dependencies (through the Beanshell console
only for now).
handle adding spritesheets. Fixed colorfilters not showing on the
worldmap and replacements simulator. Added "display type" (a.k.a rarity)
item field in the Items comparator.
Added support for the new "colorfilter" map property. Due to Java2D
having no correct color filter support, only the "blackXX" values can be
previwed. "bw" and "invert" cannot, the performance cost was simply way
too high.
