Release Version 4.15.1

[franzTobiasDLR]

Virtual Satellite Release Version 4.15.1 (Bug Fix)

This ticket captures all release related work of the VirtualSatellite4-Core release

1. Perform version update:

• [x] Checkouttag 4.15
• [x] Create new bugfix branch from this tag
• [x] Run ant script to update version numbers (open build.xml and start the updateVersions task)
• [x] Check if the server APIs had changes and update the version numbers in the servlets if necessary
• [x] Check if there are unreleased changes on the Ecore data model (open dvlm.ecore, check if History > Release (not yet released is empty))

2. Perform integration on integration branch:

• [x] Apply all needed fixes
• [x] Update the release notes

3. Update master/release branch:

• [ ] Merge integration branch into master branch (Pull Request named "Release 4.x.x")
• [ ] Create Release Tag

Well Done!! You should have a new Virtual Satellite Release :rocket: