added background rectangle to scale-bar
Projector: always set full source RA position on line start. Otherwise, transforms to exactly z=_.5 caused stripe artifacts in rare cases.
BigDataServer: take port from command line arguments
formatting
Merge remote-tracking branch 'github/master'
workaround for a bug in some combination of OS X and java version.
FileDialog will crash if FilenameFilter is set.
Looks like this:

2014-10-26 13:50:07.543 ImageJ-macosx[2912:1007] *** CPerformer: ignoring exception 'java.lang.NullPointerException
   at java.io.File.<init>(File.java:222)
   at apple.awt.CFileDialog.queryFilenameFilter(CFileDialog.java:115)
' raised during perform of selector 'safeSaveOrLoad' on target '<CFileDialog: 0x100410c50>' with args '(null)'

This cannot be caught as an exception and I found no other way of detecting
it than to check whether FilenameFilter.accept() is called.
fixed nasty bug:
InputStream.read( buf, buf.length, 0 ) returns -1.
Except when buf.length == 1024. Then it returns 0.