Lang New is Not Nullable #3124

Closes #3124
Closes #3109
bump version to 1.3.6.rc6
Closes #3108
Merge branch 'master' of github.com:NUBIC/ncs_navigator_core

Conflicts:
	spec/fixtures/psc/NCS Hi-Lo.xml
	spec/fixtures/psc/current_hilo_template_snapshot.xml