[login] redirect to real instance root if no postlogin_path is provided When not postlogin_path is provided, the login form issue a redirect to "/". The instance root may not be at "/" on the server. Then issuing a redirect to "/" send the user to the wrong location. We now redirect to "." which works fine because the "login" controller a direct children of instance root (http://babar.com/instance/login). All other redirection of the login controller use relative path too and then rely on this relative path from the login controleur to the instance root. This mechanism may be considered fragile and may deserve a proper fix. but this is to be discussed and implemented in another changeset.

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# some entities have been added before schema entities, fix the 'is' and

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# 'is_instance_of' relations

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for rtype in ('is', 'is_instance_of'):

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    sql('INSERT INTO %s_relation '

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        'SELECT X.eid, ET.cw_eid FROM entities as X, cw_CWEType as ET '

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        'WHERE X.type=ET.cw_name AND NOT EXISTS('

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        '      SELECT 1 from is_relation '

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        '      WHERE eid_from=X.eid AND eid_to=ET.cw_eid)' % rtype)