Strings for CallLogPanel relating to chat updates
Skeleton for log updates
Added new constructor to CallLog that looks up info from the CallHistory
table.  This is used for on the fly updating of the CallLogPanel and
also used when there is no other information available in the
conversations table
Amended DEBUG level for CallInput
Added: Lookups from the CallHistory table if a phonecall is not
currently in the conversation table (e.g. if it hasn't been answered
yet)

Added: On the fly updates for incoming calls
TODO: Respond to name, location and conversation changes