Merge pull request #17 from cherylcourt/master

Created script to merge all item images into one PNG file and create CSS file to access individual images
Merge pull request #18 from cherylcourt/master

Fixed rounding error with integer math
item grid now displays with item sheet image instead of individual
images
tp scroll item detail page now correctly lists "Buildings" as the
ability target
fixed find item question to use item sheet
fixed find item question answer highlights
fixed fetch image script to deal with removal of AbilityName field in
item data
Removed duplicate images; updated CSS to reference one image for cases
where duplicate images are found
Merge remote-tracking branch 'upstream/master'