mod_pastebin: Prevent header table form being mutated default_headers was mutated, probably by mod_http_errors and ended up with multiple content-type entries, which led to issues in browsers which would sometimes treat the paste as html

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summary: Remote Roster Management
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Introduction
============

This module adds support for [XEP-0321: Remote Roster Management] which
is commonly used to allow components such as transports to modify the
rosters of local users.