[#62] Seeds updated with guides, articles using new markdown fields.
[#62] Seeds updated with guides, articles using new markdown fields.

* Reduced the number of articles so there's less to manage
* Some of each of web services, guides, quick answers
* A few in each category
* One contact, just an example record
* Three users: admin, writer, editor.
* 13 legacy articles, 3 using the new markdown fields

hacktahoe/tahoe_answers,hacktahoe/tahoe_answers,hacktahoe/tahoe_answers,hacktahoe/tahoe_answers,hacktahoe/tahoe_answers,hacktahoe/tahoe_answers,hacktahoe/tahoe_answers