persisting last cell language and content
removed extra lines of code and storing only last cell-lang
changed variable name
removed array for storing the lang info using var instead
Merge branch 'develop' into issue-770-qa
making suggested changes
some cleanup on saving language, and save language whenever it changes

bind to select change rather than command entry.
Merge branch 'pr/878' into develop

Conflicts:
	htdocs/js/rcloud_bundle.min.js