MPS-18942 build language path editing
MPS-18942 build language path editing (add/delete inner path segments)
deprecate SModelDescriptor class to be able to remove it in master
Added a test operation annotation to a failing test
Merge remote-tracking branch 'origin/master' into 3.1/vaclavFixes
Merge remote-tracking branch 'origin/MPS3.0' into 3.0/mikev/test
Got rid of the 'unused' warning
make
Merge remote-tracking branch 'origin/MPS3.0'

Conflicts:
	languages/util/uiLanguage/source_gen.caches/jetbrains/mps/uiLanguage/behavior/generated
make after merge