imported trafficjam sign

From http://upload.wikimedia.org/wikipedia/commons/3/3c/Zeichen_124.svg
data update (more trafficjam records; use trafficjam sign)
upload-personal target reorganization

* Old gpsman uploader again available, now as upload-personal-gpsman
* Use the ":GPS" flag also for the gpi upload
remove unused target update-from-andreasm

Nowadays a git based workflow would probably be used instead.
data update
combine_streets.pl: actually use the -closedpolygon switch
improve success message
Merge remote-tracking branch 'eserte/master' into world
data update
Merge remote-tracking branch 'eserte/master' into world
enable to filter by appid=<appid>
set max. timeout settings for curl
set devel flag with ->param()
production site fixes
internal appid "web0"