create a default host

[ehaselwanter]

after running install on a site there is no default hostname created which leads to:

Processing SiteController#show_page (for 127.0.0.1 at 2010-08-27 10:12:08) [GET]
Parameters: {"action"=>"show_page", "url"=>"/", "controller"=>"site"}
Hostname Load (2.6ms) SELECT * FROM hostnames WHERE (hostnames.domain = 'localhost') LIMIT 1
Hostname Load (1.8ms) SELECT * FROM hostnames WHERE (hostnames.domain = '*') LIMIT 1
Hostname Load (0.0ms) Mysql2::Error: Unknown column 'hostname' in 'where clause': SELECT * FROM hostnames WHERE (hostname LIKE '%localhost%') LIMIT 1

RuntimeError (No site found to match localhost.):