persisting last cell language and content
removed extra lines of code and storing only last cell-lang
changed variable name
Fixed issue# 766
added empty check in notebook visibility for issue #766 for PR#854

Am not able to reproduce it at my local but you are correct we should kee the empty check. But wondering its already done while setting.
I have put the fix at the source rcloud.is.notebook.visible itself so that other calling faunctions also don't get impacted. I didn't put the isTrue check again as it will always satisfy the condition after defaulting. Please review and let me know if this is fine.
removed array for storing the lang info using var instead
Merge branch 'develop' into issue-770-qa
forking a notebook using Ctrl+Entr
This Fixes 766
This Fixes #766
making suggested changes
artifacts
Merge branch 'pr/854' into develop

Conflicts:
	htdocs/js/rcloud_bundle.min.js
changing local variable/function names
correct rcs keys; remove cruft

tagged version code was using top-level keys instead of the .notebook area
also there were a couple places where it made no sense to have tags
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
guard the "cmd case" for editable

(only consider the special command if there is one)
Merge branch 'pr/879' into develop

Conflicts:
	htdocs/js/rcloud_bundle.min.js
use dynamic lookup for shared files