Refactor accel and search engine loading for app mode
Refactor accel and search engine loading for app mode

So app mode with a config folder uses the same code paths
as normal browsing.

This means accelerators and search engines are available
in Private Browsing now.


dokidokivisual/midori,dokidokivisual/midori,dokidokivisual/midori,dokidokivisual/midori,dokidokivisual/midori