Always display user's drafts on the edit form.

I.e. use $editpage->mTitle when no wpDraftTitle is available in the request.

Change-Id: I5dc21b3821571efaef60cf381b2888b8cf3c8cb8
Fix a bug: drafts didn't show up when creating new pages

(Because of javascript error referencing to wpMinoredit)

Add parenthesis to clarify parsing order

Change-Id: Ibf0f4e5979314828b6efb105271cd14a43bcd7f5