* FIX: F7 to reload node data as F6 is npyscreen command
* FIX: Return values of get_nodes() upon refresh
* FIX: Code reduction
* FIX: Connection issues after stopping/restarting
* ENHANCEMENT: Show Connection info and verify user wants to connect
* ENHANCEMENT: Wait screens for background processes
* FEATURE: F7 now reloads all node info from RPC
* FEATURE: Check terminal size and exit if not large enough