Tweaks to CLI:  Refresh, scroll fix
Tweaks to CLI:  Refresh, scroll fix

Several tweaks to CLI behavior
* The "show/hide meter" setting is now persisted
* Fix behavior when scrolled back and logs are rolling off
* Fix potential crash when no logs exist
* Add Ctrl+R to force a refresh (undocumented for now-- help page is getting long and we need an automated system to resize help for smaller screens)

Dark5ide/mycroft-core,linuxipho/mycroft-core,forslund/mycroft-core,Dark5ide/mycroft-core,forslund/mycroft-core,linuxipho/mycroft-core,MycroftAI/mycroft-core,MycroftAI/mycroft-core