Added handling of techniques to item_factory, and thus items json.
Remove BOM from map.cpp.
Merge pull request #791 from atomicdryad/dejunkification

Remove junk from map.cpp.
Merge PR #789 - item techniques handled by item_factory
Fixing some missing spaces in item descriptions.
Actual typo fix.
Fix more missing spaces
Remove IF_VARSIZE from blankets and sleeping bags
Fixed some typos.