This is a big change affecting lots of areas:
* Pipeline no longer deals with JS (though it still minifies CSS)
* A new script, tools/minify-js (called from update-prod-static),
minifies JavaScripts
* A command-line argument --prev-deploy, if passed to minify-js or
update-prod-static, is used to copy minified JS from a previous
deploy (i.e., a previous git checkout), if the source files have
not changed
* update-deployment passes --prev-deploy
* Scripts are now included with the minified_js template tag, rather
than Pipeline's compressed_js
Also, as a side benefit of this commit, our Handlebars templates will
no longer be copied into prod-static/ and accessible in production.
Unminification is probably broken, but, per Zev and Trac ticket #1377,
it wasn't working perfectly before this change either.
(Based on code review, this commit has been revised to:
* Warn if git returns an error in minify-js
* Add missing output redirects in update-prod-static
* Use DEPLOY_ROOT instead of manually constructing that directory
* Use old style formatting)
(imported from commit e67722ea252756db8519d5c0bd6a421d59374185)
Scott Feeney