Draft version of a Europe map to work on

The boundaries of the map section are noted in the boundaries.txt-file.
Format: xmin,ymin,xmax,ymax
(see https://www.mapbox.com/tilemill/docs/manual/exporting/)
cleanup that mess
Correctly formatted co-ordinates of boundaries
Merge branch 'master' of github.com:HistoryCampus/HistoryMap
change to https because gh-pages serves in https