Started refactored some logic to make it easier for unit testing
Started updating SnodeAPI calls with prepared requests
Fixed some issues with the PreparedRequest 'map' and 'handleEvents' functions
Genericised common pre-request behaviours for SnodeAPI calls
Added an 'all' namespace to make the "delete from all" behaviour more explicit
Defaulted the ConfigDump 'timestampMs' database column to 0
Updated the 'conversationInConfig' logic to support the note to self conversation