Use UTC time for iscomposing indication

Ignore-this: 34305fd864034fa55e9b5260d3c30abe

darcs-hash:20091116133012-56b4d-1a378722d4178d8929fbf28817f8531ac1ab010e
Add remote identity to the iscomposing notification

Ignore-this: b78f1ad581d486400873cccda34d513f

darcs-hash:20091116134917-56b4d-b25a4eee167197911f919e066e885fdeae7dc85a