"Initize" container, then apply Grid layout.
the layout will scale units (Jcomponents+their labels) of each cell according to the maximum width of all units in the same column,
and to the maximum height of all units of the same row (preferred in both cases).
Then the proportion is maintained so the grid fills the available spare space.
Fields inherited from class org.universAAL.ui.handler.gui.swing.defaultLookAndFeel.Layout.AbstractUnitLayout