Const qualify djb2_hash parameter.
Add text snippet class for assigning and retrieving variable descriptions.
Fix off-by-one range error.
Add snippets data file and initialize snippets library.
Make item::mode persistent across saves.
Add new stationary itype and a flyer item.
Override description of stationary items with dynamic description.
Add flyer to spawn lists.
Merge PR #787: text snippets! Fliers!

Conflicts:
	CataclysmWin.cbp
	msvc100/Cataclysm.vcxproj
Fix malformed JSON entry.
Merge fix for PR #787 - flyers spawn now