[SD-5553] Modified saved search end-points and validation of user for saved search create/update/delete operation
[SD-5553] Modified saved search end-points and validation of user for saved search create/update/delete operation

[SD-5553] Styling changes done

[SD-5553] Changes to feature after changing saved_search endpoint

[SD-5553] Review changes and additions

[SD-5553} Review changes to use get_user_id() instead of get_user()['_id']

[SD-5553] Adding 'user' back in schema after review discussions

[SD-5553] Prepopulated data for saved_searches should now be executed logged in as the user of that search

hlmnrmr/superdesk-core,petrjasek/superdesk-core,petrjasek/superdesk-core,nistormihai/superdesk-core,petrjasek/superdesk-core,mdhaman/superdesk-core,mdhaman/superdesk-core,marwoodandrew/superdesk-core,ioanpocol/superdesk-core,marwoodandrew/superdesk-core,nistormihai/superdesk-core,superdesk/superdesk-core,petrjasek/superdesk-core,superdesk/superdesk-core,ioanpocol/superdesk-core,mugurrus/superdesk-core,mdhaman/superdesk-core,ancafarcas/superdesk-core,ioanpocol/superdesk-core,superdesk/superdesk-core,hlmnrmr/superdesk-core,mugurrus/superdesk-core,superdesk/superdesk-core,ancafarcas/superdesk-core,mugurrus/superdesk-core