Fix Binary on python < 2.7.4 (closes #10593811) Before the fix for http://bugs.python.org/issue10211 we can't pass a buffer object to BytesIO, so keep using StringIO in that case. And because StringIO is an old-style class, we can't use super().

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body { background-color: %(bgcolor)s

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       font-size: 100%;

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     }