MPS-19771 Comment statements action doesn't work from main menu
fixed MPS-20174: show empty statistics when model is null
MPS-20034 Improve console help
MPS-18625: allow also stat and showBrokenRefs commands
MPS-20140 Paste blExpression as statement
MPS-20049 Disable Paste as Java for read-only models
MPS-20047 There is an ability to edit Generation Plan shown in Console window
MPS-20040 Do not print 'empty sequence' result as link
MPS-19995 Ctrl+X in empty commandholder cuts the commandholder
MPS-20015: add export flag
fixed buildscript
MPSSPRT-21 nullpointer in ChangesManager
MPS-20102 Remove trace.info from source_gen
Merge remote-tracking branch 'origin/MPS3.1' into 3.1/mikev/test
make
fix diff test for build.sandbox
Merge remote-tracking branch 'origin/MPS3.1' into 3.1/mikev/test
rebuild samples
make
merge mburyakov's changes into master