REBRAND EPIC (can't link it, don't have permissions): https://issues.redhat.com/browse/RHINENG-19585

All instances of the "Insights" name across our app should be changed "Lightspeed".
The displayed name should depend on this feature flag: platform.lightspeed-rebrand

Places where this occurs in our app:

• "Zero State" view
• "Use Template" modal
  • The "Insights" tab
  • Warning in the "curl" and "Ansible" tabs