This Fixes #864,#827

Disabling up and down arrows for both comment text area edit and on content editable.
This Fixes #818

prevent default ctrl/cmd+s on browser and internally hit save icon
add --skip-packages option for build.sh
fix conditional expression for bourne shell
disable jquery.whiny
add rcloud.shiny package

aside from the stupid 3-second delay for shiny load, it's good stuff
point jquery and jquery-ui to versions needed by Shiny
This fixes #864,#827
add python.extra.libs option to rcloud.config allowing custom system-wide location of python libraries
This fixes #798
Merge branch 'tunnel-shiny-2' of github.com:att/rcloud into develop
This Fixes #798

given appropriate variable name
add .renderPage() from RCW so that CSS/JS injection works
remove the timer to avoid double-injecting shiny.js (ever since .renderPage)
use ../../shared instead of top level .. in case it helps
This fixes #864,#827
This fixes #864,#827
This Fixes #818

Implemented the feedback.
add a bunch of js dependencies
Merge pull request #884 from sujitbehera27/command_save_818

This Fixes #818 - ctrl/cmd-S save