…p todos for potentially better solution

… missing

…start with centralities

… computation and some centralities still missing

…still remaining

…edge naming

…ll missing

…ces into gradleAndJava17

…tyhandler

…ebclient

… collections anymore

Merge the branch with the arangoDB implementation for WebOCD with
the branch with the graphstream and java 17 updates for WebOCD.

resolve conflicts between develop and javaAndGradle17 branches
fix the error when downloading simulation group info
add functionality to delete simulation series and groups when a graph they are based on is deleted