Change edit methods to use opts hashes

[elifoster]

Change #edit to take a title, the text, and an options hash containing a minor: key, a bot: key, and a summary: key. Defaults are the same.

Change #create_page to take a title, the text, and an options hash containing a summary: key and a bot: key. Defaults are the same.

Change #move to take from, to, and an options hash containing a reason:, talk: and redirect: key. Defaults are the same.