Change Issue Types for eclipse-score/score Repository

Summary

Please change the issue types in the repository https://github.com/eclipse-score/score:

• Removal of Milestone
• Renaming of Epic to Story

Steps to reproduce

n/a

What is the current bug behavior?

n/a

What is the expected correct behavior?

n/a

Relevant logs and/or screenshots

n/a

Priority

• Urgent
• High
• Medium
• Low

Severity

• Blocker
• Major
• Normal
• Low

Impact

Needed for the project planning.