+WW level is now showed in the village preview
+WW level can now be changed in the building list
+Walls and their level are now showed in the village preview
Some installations seem to support localhost:port for 1st parameter of
mysqli_connect(), others will only support the official parameters with
port towards the end. This fix tries them both - first the official one,
then the localhost:port one.
Also, there were a lot of mysqli_connect()'s inside Admin mods. These
now also use the central Database class.
iopietro