Update Python samples
fixing sample [ci skip]
Add package to Android webview context
Merge pull request #2802 from imurchie/isaac-pythonsamples

Update Python samples
Merge pull request #2817 from bootstraponline/add_package_to_webview_context

Add package to Android webview context
make sure UNZIP env var doesn't confuse our code
fix #1173
exclude more files so JSCS passes
Merge pull request #2819 from jlipps/master

make sure UNZIP env var doesn't confuse code
make sure people know dev dependencies are different (fix #1197)