Clean up the service hash when services are disposed
Clean up the service hash when services are disposed

GNOME/libsocialweb,ThomasBollmeier/libsocialweb-flickr-oauth,ThomasBollmeier/libsocialweb-flickr-oauth,lcp/mojito,GNOME/libsocialweb,lcp/mojito,GNOME/libsocialweb,lcp/libsocialweb,lcp/libsocialweb,lcp/mojito,ThomasBollmeier/libsocialweb-flickr-oauth,lcp/libsocialweb