- remove trailing spaces
- add instruction for packages
- reindent YAML examples
- remove section telling that there is no config files, as
`katenary.yaml` file can now be used
- changed variables that was uppercased, that's not OK for linters
- cleanup some documentation
- remove the "/" in label prefix, a function is now used to get the
complete label (`labelName()`)
- some cleanup in tpl files, and so on...
