Don't show current POV site on the panorama

[wilhel1812]

When viewing a panorama from Site A, Site A should not be marked on the panorama.

Milestone: 0.19.0

Acceptance Criteria:

• Site A is not marked when viewing a panorama from Site A
• Sites other than current POV are still shown on the panorama

[wilhel1812]

Verified on staging. Closing.