Code review comment for lp:~sil/desktopcouch/load-many-ini-files

This will now load every ini file it finds in any XDG folder for desktopcouch, so .config/desktop-couch or /etc/xdg/desktop-couch. So we can just add new ini files as required. The test environment adds sourcetree/etc/xdg/desktop-couch to the xdg config list, so adding new files in there will mean that they are picked up by the test environment correctly *and* that they are properly added when DC is installed as a package.