RShop 0.1.8

Lighter on battery and CPU: database writes for covers, screenshots and descriptions are batched, the Glass and PlayStation backgrounds are still unless "Animated background" is turned on, a selected 3D box rests after a few swings, and the blurred artwork backdrop only shows on dark themes. Reading game pages ahead is now a setting, off by default.

Fixes: covers no longer reload when switching between flat and 3D, and text over artwork (the Home banner) is readable on every theme, including eShop. The logo and the switches have better contrast.