issue2550831: Make the classic template query.edit page work. R David Murray had a number of fixes. At least some of the fixes were already present in the devel and responsive templates. I touched up the html a bit and did what I hope aresome improvement for performance by shoving criteria into the filter rather than looping over all issues and filtering at the tal level. Also used R David's method to add a restore feature and work around an issue where a retired (deleted) query could still be in the active list. But because it was retired there was no way to manipulate it.

def audit_html_files(db, cl, nodeid, newvalues):
    if newvalues.has_key('type') and newvalues['type'] == 'text/html':
        newvalues['type'] = 'text/plain'
    

def init(db):
    db.file.audit('set', audit_html_files)
    db.file.audit('create', audit_html_files)