Refactor error display into midori_view_display_error
Refactor error display into midori_view_display_error

Further more midori_view_load_alternate_string now abstracts the
different ways to load data in different WebKitGTK+ versions.


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