pipelines: run hg diff for users first, then check wc -l output

pipelines: install npm for `make devel`

pipelines: more specific regex for ansible.log

pipelines: stop explaining the obvious

pipelines: also make sure .coffee files compile to the committed .js files

pipelines: YAML syntax?

pipelines: test deployment user and path

pipelines: try and check SRI

pipelines: rewrite awkward && {} || {} to a proper if else fi

pipelines: let's peek into user directory to find something useful