Add :order option to Author.posts_with_comments_and_categories so that tests which assume implicit id order pass with database which do not provide it.  Scrubbed whitespace.
Add :order option to Author.posts_with_comments_and_categories so that tests which assume implicit id order pass with database which do not provide it.  Scrubbed whitespace.

git-svn-id: afc9fed30c1a09d8801d1e4fbe6e01c29c67d11f@2934 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

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