Uwosh-default

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* removed use of uwosh_tools in portal_actions
[tkimnguyen]

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* bumped version number to indicate works with Plone 4.0.1

* no longer requires uwosh.requirements

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* add help_url property

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* removes unnecessary include of uwosh.requirements

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* By default, emails to ploneerrorsuwosh.edu unless you specify in
portal_properties -> site_properties a value for "error_recipients"

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* fix to only send error once