Reorganisation of code (services, implementations, etc.)

* liblouis/libhyphen/texhyphj: use DS everywhere, no more 'manual' service registering
  (--> something broke after upgrade to new Felix, using DS fixes that)
* libhyphen/texhyphj: split into core and saxon bundles
* BundledBinary: unpacking and os filtering in bundle itself
* ...
Update assembly pom
Make default louis:page-layout when no @page rule is present
Add CSS property typeform-indication