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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Introduction
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This module is similar in purpouse to mod\_groups, for when you want all
users on the server to be in each others roster.

Details
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Upon login, this module will add all currently logged in users to the
logging in users roster.

Configuration
=============

Just add it to the modules\_enabled, after that there is no further
configuration.