convert drive links tool

[qaisjp]

replace the instructions on /file with a conversion tool. this is fairly simple. no jquery please.

drive folders: "https://drive.google.com/drive/u/0/folders/0AIKEqWfeWuQQUk9PVA".match(/https:\/\/drive\.google\.com\/drive\/u\/\d+\/folders\/(.*)/)

docs: "https://docs.google.com/document/d/1W1xVJs_RvV3KBbk1bKjsDvYUyUitER4jVbuae-nUFx8/edit".match(/https:\/\/docs.google.com\/document\/d\/(.*)\/edit$/)

files that drive can render: "https://drive.google.com/file/d/0B2AAOQQZ_8BxNnpNajA0dEF6WGs/view".match(/https:\/\/drive\.google\.com\/file\/d\/(.*)\/view$/)