stub viewer export commands
Merge remote-tracking branch 'origin/master' into feature/viewer-export
move plot export code to a common module
factor common elements out of export classes
pass previewer to save plot as image dialog
more factoring out common functions from plot export
stub for viewer export to image
add viewer_export query param
prevent signed/unsigned comparison
return iframe directly from previewer (rather than dimensions)
viewer: export to clipboard (tested on linux)
viewer file export (qt)
add page region gwt callbacks on osx (stubs)
viewer clipboard export on the mac
add printPoint utility function
make a copy of the regionRect
add iostream header
improved region capture
cleanup imageRef capture code
viewer export: use NSImage rather than CGImageRef