Remove Type/Creator setting from preferences window
Remove code about Type/Creator
Remove and modify document where related to Type/Creator
Use more NSURL instead of NSString
Remove outdated bug measurement

手元の10.7, 10.9で共に検証したがコメントに書いてある現象は起こらなかったので削除する
Fix a method not supported on 10.7 was used
Merge branch 'refs/heads/feature/isssue44_creator' into develop (close #44)