Partial item support for df_building
Readme df_building, df_type.
Fix df_building typo
Merge branch 'master' of https://github.com/Asvae/DFRawFunctions
df_tool and df_building improvements

df_tool now puts output into $output variable, then returns it ones.
Allows better editing options than multiple returns.
df_item, added lot of items, ATM flawlessly shows every
masterwork_furnace.txt mat.
<nowiki> support for df_building