Comment 4 for bug 699944

@Daniel Fore:
Any suggestions on what the different messages should look like?

As a starting point I have a branch attached which simply filters the suggestions from the current error page (check address for typos, check cable plugged in or wifi card enabled, check network setting) based on the network availability provided by glib:
* if g_network_monitor_get_network_available is false, meaning there's no default route, show the check the cable/wifi card suggestions
* if g_network_monitor_can_reach doesn't reach midori-browser.org show the check network settings suggestion
* if none of the above is true (we have a network connection AND midori-browser.org is theoretically reachable) show the check for typos suggestion.