Fix WebP file in wrong category.

Signed-off-by: Khral Steelforge <garuda2550@gmail.com>
convert if-else chain to switch-case.

Signed-off-by: Khral Steelforge <garuda2550@gmail.com>
Condition change in category maker.

Signed-off-by: Khral Steelforge <garuda2550@gmail.com>
Set BrowserWindow to center of screen.

Signed-off-by: Khral Steelforge <garuda2550@gmail.com>