Some development board has less memory like 1GB. This cause various system unstable because our demo system is not mature to low memory or out of memory situations. 

To achieve small memory footprint, following items would be introduced.

• Abandon scaling support by Window Manager
• Start supporting multiple screen resolution (introducing device pixel , CSS pixel and device pixel ratio)
• Change QML for AGL Demo apps to fit multiple resolution automatically
• Improve runxdg to pass dimension of properly resolution as macro available in configure (TOML)