Sort the "Status" drop-down by maturity level

[wseltzer]

Instead of alphabetically, sort the status drop-down:

          <option value="rec">Recommendation</option>
          <option value="pr">Proposed Recommendation</option>
          <option value="cr">Candidate Recommendation</option>
          <option value="wd">Working Draft</option>
          <option value="note">Group Note</option>
          <option value="ret">Retired</option>
          <option value="per">Proposed Edited Recommendation</option>

(and note somewhere on the page that EDs aren't listed here)