pgstatsinfo - pg_reporter: Add english documentation.

Log Message:
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Add english documentation.
Fix a query in details report; Use LEFT JOIN to handle newly created database.

Modified Files:
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    pg_reporter/doc:
        pg_reporter-ja.html (r1.1 -> r1.2)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgstatsinfo/pg_reporter/doc/pg_reporter-ja.html?r1=1.1&r2=1.2)
    pg_reporter/htdocs/template:
        details.xml (r1.4 -> r1.5)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgstatsinfo/pg_reporter/htdocs/template/details.xml?r1=1.4&r2=1.5)
    pg_reporter/pgut:
        pgut.c (r1.6 -> r1.7)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgstatsinfo/pg_reporter/pgut/pgut.c?r1=1.6&r2=1.7)

Added Files:
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    pg_reporter/doc:
        pg_reporter.html (r1.1)

(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgstatsinfo/pg_reporter/doc/pg_reporter.html?rev=1.1&content-type=text/x-cvsweb-markup)