Create reference documentation in maven build
* Replace the `antrunner.sh` script with the tycho-eclipse-run plugin.
-> No reference to an external eclipse installation required anymore.
* Move the reference build from the build project directly to the pom
file of the doc project.
-> All files needed for the reference build kept in the same bundle.
* Generated reference files in target/reference, copy them into the
bundle jar from there.
-> Source code is not modified by the build anymore.
* Remove outdated readme and todo files.
Resolves bug 422143
16 files changed
