PDI-2107 - Stream Lookup options KeyValueAreInteger and SortedList should be disabled if Preserve Memory is unchecked.

Fixed UI.
To 2 kinds of memory preserve checkbox 'Preserve emmroy' should be
checked. This will reflect real code behaviour for this cases.
Merge pull request #445 from prakapenka/PDI-2107

PDI-2107 - Stream Lookup options KeyValueAreInteger and SortedList should be disabled if Preserve Memory is unchecked.