Imported core and testing meeting notes

Since both core and testing had between 50 and 70 meeting notes to be imported, [I wrote a script](https://gist.github.com/jzaefferer/5677000) that took the atom feed, went through all pages, extracted the content, converted it to markdown, and wrote that to disk.

This PR is the result of that script. There was one duplicate testing post, which I reverted, to keep the manually edited one. Otherwise this is the unedited output of my script. It's not perfect, but the hour it took to write that script seems like a better investment then to import all those manually.