core: Change Error message

when trying to create template from MBS disk (not supported feature) the error message is 'Cannot add Template. Managed Block Storage is not supported this operation.'
and now it will be chaged to 'Cannot add Template. Managed Block Storage is not supporting this operation.'

Signed-off-by: Artiom Divak <adivak@redhat.com>

frontend/webadmin/modules/frontend/src/main/resources/org/ovirt/engine/ui/frontend/AppErrors.properties

@@ -523,7 +523,7 @@ ACTION_TYPE_FAILED_STORAGE_CONNECTION_FOR_DOMAIN_ALREADY_EXISTS=Cannot ${action}
 ACTION_TYPE_FAILED_STORAGE_CONNECTION_FOR_DOMAIN_NOT_EXIST=Cannot ${action} ${type}. Storage connection is not attached to the specified domain.
 ACTION_TYPE_FAILED_STORAGE_CONNECTION_ID_EMPTY=Cannot ${action} ${type}. Storage connection id is empty.
 ACTION_TYPE_FAILED_STORAGE_CONNECTION_NOT_EXIST=Cannot ${action} ${type}. Storage connection doesn't exist.
-ACTION_TYPE_FAILED_UNSUPPORTED_ACTION_FOR_MANAGED_BLOCK_STORAGE_TYPE=Cannot ${action} ${type}. Managed Block Storage is not supported this operation.
+ACTION_TYPE_FAILED_UNSUPPORTED_ACTION_FOR_MANAGED_BLOCK_STORAGE_TYPE=Cannot ${action} ${type}. Managed Block Storage is not supporting this operation.
 ACTION_TYPE_FAILED_STORAGE_CONNECTION_UNSUPPORTED_ACTION_FOR_RUNNING_VMS=Cannot ${action} ${type}. VMs ${vmNames} should be down.
 ACTION_TYPE_FAILED_STORAGE_CONNECTION_UNSUPPORTED_ACTION_FOR_RUNNING_VMS_AND_DOMAINS_STATUS=Cannot ${action} ${type}. The data domains ${domainNames} should be in maintenance or unattached, and VMs ${vmNames} should be down.
 ACTION_TYPE_FAILED_STORAGE_CONNECTION_UNSUPPORTED_ACTION_FOR_STORAGE_TYPE=Cannot ${action} ${type}. Storage connection parameters can be edited only for NFS, Posix, local or iSCSI data domains.