Bug #1985857: Fix for issue with disappearing theme when portfolio is shared and made copyable

We need to better define when one can see / pick from
'userscanchooseviewthemes' dropdown

Signed-off-by: veronicavarsha <veronicavarsha@catalyst.net.nz>
Change-Id: Idf38ff852efa878cabfc8849a8e7ae1f668ba1c2