COS:

• Remove admin option
• Welcome mat changes (remove the banner)
• Create Epic fields on startup

Testing Notes

Q: Make sure THE UPGRADE works both when Epics are PREVIOUSLY not enabled and are enabled.
A: Tested empty upgrade with different JIRA versions as well as upgrading on different JIRA versions

Q: Make sure Epics that are in the backlog of plan mode move properly to the sidebar and colored lozenges populate properly.
A: The Epics move as expected but the colours + Epic Name will be empty as not yet set