Merge pull request #141 from ratrun/master

GPX export button in Graphhopperweb
API change for cleaner *Skip* classes
fine tuning of #141
minor fix to comment
additional ctor for GPXEntry
made flush protected
web: minor addition to small buttons
no sort by default in measurement
fixing #145
less public methods for abstract FlagEncoder; do autoclose in graph tests
proper handling of infinit distances
for now workaround #128
UI with ambiguity resolution => #146 fixed
minor fixes to web UI
minor fix to GPX export
ignore special duration notation
fixing JS tests and small time bug
reverse de-dup of geocoder
fix barrier problem for #145
UI: fixed minor time formating bug