mod_http_oauth2: Improve error messages for URI properties Since there are separate validation checks for URI properties, including that they should use https, with better and more specific error reporting. Reverts 'luaPattern' to 'pattern' which is not currently supported by util.jsonschema, but allows anything that retrieves the schema over http to validate against it, should they wish to do so.

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summary: Retrieve private XML data via adhoc command
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Introduction
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This is a very simple module which implements an adhoc commant
toretrieves the users private XML data.

Details
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Simple module which adds the adhoc command "Query private data" and will
return the users private XML data (typically muc bookmarks,.. ).