avoid loading ast for non-color variables in completion
make changed psi range calculation faster and more correct
EDU-176 write invalid task windows as empty
Merge remote-tracking branch 'origin/master'
PathManager.getHomePath: removed unneeded (and potentially incorrect) check for Mac
EDU-173 close console on reload course action
Merge remote-tracking branch 'origin/master'
EDU-170 task windows update on cut/paste