node-sass is a compiled ELF module, which is problematic for
distributions that want to rebuild everything from source. The sassc CLI
program is packaged everywhere, and both use the same libsass library.
So drop node-sass and sass-loader, and replace it with a simple loader
wrapper around sassc.
This also saves 122 npm packages (16 MB in node_modules/).
Closes#382
The current version failed with
Option "--directory" requires 1 arguments, but 0 were provided
In the current stdio npm module version, getopt() now requires a
`default:` attribute, otherwise it considers the options as required.
Also sync PO helpers with current cockpit.
Add PO template build to travis check, to make sure that it keeps
working.
Closes#375
