mod_invites_page: Change client selection button text from 'Install' to 'Select' by default This also allows specific clients entries to override the text via the 'select_text' field. Rationale: 1) users may already have the software installed, we still want them to select it anyway for the tailored setup experience. 2) some clients (e.g. web clients) are not really "installed" so the text was misleading

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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,.. ).