Changes

• Fix ROM browser storing multiple copies of the ROM information in memory
• Fix game names in the Create Netplay Session dialog
• Fix same CPU emulator setting being enforced during netplay
• Fix VRU being able to be initialized during netplay (see mupen64plus/mupen64plus-core#1105)
• Fix enter key not clicking on the 'Send' button in the Netplay Session dialog
• Fix vsync being able to be enabled during netplay
• Fix 'Synchronize audio' in RMG-Audio being able to be enabled during netplay
• Fix OSD tab of GLideN64 not listing all installed fonts on Linux (see gonetz/GLideN64#2892)
• Add more error messages to the netplay dialogs
• Add loading screen to the Netplay Session Browser dialog
• Add no sessions screen to the Netplay Session Browser dialog
• Add no ROMs screen to the Create Netplay Session dialog
• Change default ROM search limit from 250 to 1024
• Change 'Server URL' to 'Server list URL' in the settings dialog