logs.cgi: Add files for showing firewall blocks by country

Add similair functionality as firewalllogip.dat and
firewalllogport.dat, by listing the number of blocks
per country, and provide a details link to show only
the blocked ip addresses from the country.

This is a preliminary prototype.
firewalllogcountry.dat: Use language strings and add to menu

Add some language strings for the new firewalllogport.dat, and
include html fixes done in firewalllogip.dat, which this file
is based on.

Also try to add the menu item to the sub menu, but that is
currently not working.
showrequestfromcountry.dat: Use language string, and fix links

Define language key for input field.
Fix links for older and newer links.
Indentation fixes.

The code is a copy from showrequestfromip.dat, ideally
we should have merged all three showrequestfrom*.dat files
into one file, but I do not do that now, because it would
really require a rewrite of most of the logic, and I understand
that one does not want to do such changes in 2.x.
en.pl: Trivial sorting of a key
firewalllogcountry.dat: Show green0,blue0, and orange0 as countries

It makes sense to see how many fire wall logs entries are dropped
from the interfaces green0, blue0, and orange0, so this is
displayed as a country. The showrequestfromcountry.dat also
supports filtering based on the interface.
firewalllogcountry.dat: Simplify code for table background color
firewalllogcountry.dat: Fix filename for piechart image