[INTERNAL] Table: Add option in settings dialog to enable column freeze
[INTERNAL] Table: Add option in settings dialog to enable column freeze

The internal settings dialog used in test pages is enhanced with an
entry to enable/disable column freeze.

Change-Id: I69d4309645b307e248f56de7b578fd3e4ec4098e

SAP/openui5,cschuff/openui5,SAP/openui5,SAP/openui5,cschuff/openui5,cschuff/openui5,SAP/openui5