update version to match release
should.js 'should.be.a' changed 

[#58749778]
Hide line markers only in IE10, keep them in IE9

[#58737286]

That was the original intention, but the test was broken.
Fix layout of "Pressure Equilibrium" interactive (SAM version)

[#58382216]
textmate properties: display spaces as spaces
move models into src/lab/models dir
update lab-sample-keystore.jks for Java code signing

This is a self-signed certificate. Normal production
servers should use a certificate purchased from a reliable
source.
ignore config/lab-littlechef