Merge pull request #52 from Nakaner/master

JOSM compatability and addition of German Ne2, Ne5 and H/V distant signals
Added missing german Zs 3v icons
Added missing german Lf 6 speed signal icons
Added missing german Lf 7 speed signal icons
Added missing german Zs 10 speed signal icons
Removed duplicate signal icons
Added missing german Zs 3 "10" speed signal icons
Added all missing German speed signals to maxspeed layer, updated legend
Added nicer German Vr distant signal icons
Added German Ne 5 stop signal icons
Added German Ne 2 distant signal icons
Corrected minor mistake in german JOSM preset
Removed deprecated maxspeed=signals from german JOSM preset
JOSM preset: removed on_demand=* from stop positions (they belong to routes, not to infrastructure)
German JOSM preset: Haltvorscheibe -> Wärtervorscheibe
Improved search & result order, return station category
Regrouping of signals, updated names of signals in german JOSM preset
Improved search engine
Added rendering of junctions, crossovers, service stations, yards, sites, nicer rendering font
reodering milestone dialog of German JOSM preset

I find it annoying and a waste of time to hit TAB key several times
every time I enter a milestone of a electrified railway line. That's
why I place catenary check box in front of emergency break shunting.