Alm-solrindex

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- commit to cleanup version 's

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- PEP8 cleanup
[clayton]

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- A commit after an aborted index update no longer breaks with an
assertion error. Refs 1340

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- Filter out invalid XML characters from indexed documents.

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- Fixed test failure by going to the login_form to log in, instead of
the front page, where we get ambiguity errors.
[maurits]

- Fixed the catalog object information page. Solr was unable to parse
a negative number in the query.

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- Added support for Solr boolean fields.

- GenericSetup profiles now have the option of clearing the
index.

- Made the waituri script wait up to 90 seconds by default,
pause a little more between polls, and accept a timeout
parameter.