[mediawiki.action.history.js] Provide cleaner handling of action=historysubmit hack.

[mediawiki.action.history.js] Provide cleaner handling of action=historysubmit hack.
* Follows-up r108341, r108370
* Doesn't remove it, server will still handle them properly (as provided by r57415) when JavaScript is off. This commit adds a progressive enhancement when possible so that submit will go to either of these:
* title= & diff= & oldid=
* action=revisiondelete & ids[..]=
instead of one of these
* action=historysubmit & title= & diff= & oldid= & ids[..]=
* action=historysubmit & revisiondelete=1 & ids[..]= diff= & oldid=
(removing redundant parameters and parameters from the other submission-type that don't belong in that url)
* Also re-adding support for action= revisiondelete in the query, as it was originally. Due to this hack it appears that support for the original action name (which is still returned as "revisiondelete" from MediaWiki::getAction() ) was removed or never existed in that place of the code at all. Fixed now.