.osc extension for OsmChange file 

JOSM supports only .osc as OsmChange extension.
If you have other plans with the filename, or I editied wrong file, just drop my changes.
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Update Version.java
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Merge pull request #449 from BathoryPeter/patch-4

.osc extension for OsmChange file
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Change buttons for navigation from search screen
Make sure we label all online functions explicitly as "Online"
Update voice search
Fix hebrew issue
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string improvements for new search UI
consistent use of "Directions" - strawman for en strings
remove unused string map_specify_point