Code drop

- [maven-release-plugin] prepare release xplanbox-8.0-RC1 (91a7af9a5)
- XPLANBOX-3637 - separated seeds (3d01b202c)
- XPLANBOX-3637 - execution of fullseed with docker (976781375)
- XPLANBOX-3637 - configured fullseed (766cf6049)
- XPLANBOX-3641 - added missing semantic message for bereich_nummer (c3b170eb4)
- XPLANBOX-3638 - exclude DatababaseVerifier if profile test is enabled (2082128e7)
- XPLANBOX-3070 added list of deprecated functions removed in v8.0 (7e478aef9)
- XPLANBOX-3067 - update and add new soapui project testplans, update README (441b6db40)
- XPLANBOX-3070 added overview with release history (15a7fe4e8)
- XPLANBOX-3067 - described brekaing changes, updated to v2 (42ca9e3a4)
- XPLANBOX-3067 - removed header from json test resource breaking the tests (412fc9874)
- XPLANBOX-3067 - removed header from build-info.properties to fix build errors (cdd0cbf3b)
- XPLANBOX-3067 - updated licence header (33f47ddc5)
- XPLANBOX-3067 - updated licence header (9b9248cb0)
- XPLANBOX-3067 - updated LICENSE_UNKNOWN.txt (f08f7018e)
- XPLANBOX-3067 - updated xplandb_xplanmgr.png (2908ddfda)
- XPLANBOX-3604 removed duplicate dependency to spring-context in xplan-validator-web module (c4ed1ed70)
- XPLANBOX-3490 updated publiccode YAML to release v8.0 (2d5f84662)
- XPLANBOX-3592 - Adjust links on landingpage (8014fb865)

Co-authored-by: Julian Zilz <zilz@lat-lon.de>
Co-authored-by: Lyn Elisa Goltz <goltz@lat-lon.de>
Co-authored-by: Torsten Friebe <friebe@lat-lon.de>
Co-authored-by: latlon team <info@lat-lon.de>

Dropped from commit: 98768c6ae9a37be3faffbe5d984f6d1f2e5addb4