Use right page_id attribute to find pages

We were using "postid", but wp.getPages uses "page_id"
That means pageID was always nil on `+ [Page findOrCreateWithBlog:andPageID:]`, and pages were recreated on every sync

refs #1578
Disable remote autosaving

We're disabling this until it's more stable
Fixed orientation bug on iOS5. fixes #1582
Updated translations
Don't succeed media uploads on empty response

In some cases (display_errors Off?) media uploads that run out of memory
would return an empty response. Treat that as a failed upload so it can
be retried/discarded