[revert cleanup] fix data type selection

With the patch 180888 ( fixed focus handling of type cell editor on
Linux ) cleanup was performed. This cleanup broke the datatype selection
and datatypes could not be changed in the table anymore. Therefore, this
patch reverts the cleanup, while retaining the original fix

Change-Id: I3d267bf385fd738ce54bd1a821b130b810b707ff
1 file changed