Indentation in jelly files fixed

- Tabs updated to spaces and align fixed.
[JENKINS-13235] sloccount report formating on build summary

- Build summary now displays a sortable table instead of the list of languages.
- HTML code of summary is now formatted directly in jelly instead of in java code.
- German and Japanese translation strings blindly copied from existing languages_*.properties.
- Old and now unused translation strings removed.