link to bug report and feature request in header of website

[flokain]

Describe the solution you'd like links zu github feature and bug reporting auf der website im header oder footer

Additional context links are

• https://github.com/oefsv/ulti-players/issues/new?template=feature_request.md
• https://github.com/oefsv/ulti-players/issues/new?template=bug_report.md