specify Pod encoding

In newest Pod-Simple versions hitting a high bit char without an
encoding specified in the Pod document generates a warning.
add Pod test
bbbikeleaflet: new query param l (for initial overlay activation)
update copyright
update planet disk size
data update
support for SRTM files
Merge remote-tracking branch 'eserte/master' into world
update
indent
merge srtm files to one big srtm.osm.pbf file
data update (u.a. bridge over Yorckstr.)
update
Merge remote-tracking branch 'eserte/master' into world
support planet SRTM
planet SRTM
planet SRTM
25m contours
contours
contours images