Update documentation of the HTTP server; expand it to cover templates.
Add an explaination at how to customize templates in the httpserver doc.
Add a note in the httpserver doc to mention this feature is only available in Limnoria.
Merge import/ in other directories (develop/ and use/).
Fix titles in develop/advanced_plugin_configuration.rst.
Write documentation of configuration hooks.
Fix develop/index.rst.
Document channel-specific and private configuration variables.
Document read/write of configuration variables.
Fix typo in develop/advanced_plugin_config.rst.
Document SIGHUP.
Document html templates customization on the user side.
Document generic variable access syntax.
Document 'do-commands'.
Document dynamicScope.
Document commands handling on the plugin side.
Update copyright date.
Document capabilities on the plugin side.
Document pre-command-call hooks.
Document inFilter and outFilter.