standardize attribute, method, argument, etc names about ossapi HOT 2 CLOSED

a prerequisite to this is a custom field class which we can use to tell our deserialization to deserialize an attribute into a differently named field, since right now they have to match 1:1, which means we can't rename user to users or wiki_page to wiki_pages. Such a field class would also allow us to get rid of our special-case handling for the @ character in attribute names, which we currently force-replace with an underscore.

from ossapi.

closed by 7a77f5b. I've since decided that id instead of user_id or something similar is actually probably fine. I think I slightly prefer user_id but not enough that I can justify breaking parity with the api.

from ossapi.