Changes

• [Explore] Autofocus on tag and collection adder input
• [Explore] Refresh model list with F5
• [Explore] Better model rename handling
• [Explore] Escape wasn't closing modal correctly
• [Settings] Settings backup
• [Sources] Library going missing no longer crashes app
• [Explore] Clear the source tree when refreshing
• [Explore] Model count instead of directory count on scan messages