Merge pull request #5 from Triv90/manila_juno

Add share servers tab into admin panel
Fix display of creating shares in shares table

If share is being created without share-network and has status 'creating'
it appears and immediatly disappeas from share table because horizon can
not get its share-network.
Fix quota calculation for share-networks

Share network model in Manila does not have 'status' field, so remove it
to avoid following error:

"AttributeError: status"
Merge pull request #6 from Triv90/manila_juno

Remove status field on share network detail page