Add require bits as lua51-bitop is not compiled in linux (it is in luajit and lua52)
DOC: music IDs
Merge pull request #476 from Cloudef/lua-bitops

SCRIPTS: Add require bits as lua51-bitop is not usually compiled in linux packages
Corrected typo
Merge pull request #482 from rpetit3/master

Corrected typo
Fix missing require("scripts/globals/titles") in newly the updated title npc scripts...

Also removed unused requires, most of these don't so much as call a single text ID. And trimmed trailing space...Left your tabs alone.