By resizing the deck we ensure that if the contents do not fit
in the existing height, they will after we expand to the minimum
height. Also, the minimum height is now the correct one.

This prevents seeing vertical scrollbar in LOK, which is very
slow and unfriendly, instead renders the full sidebar and lets
the client scroll, if necessary.

Change-Id: Idc2a622a65074b7afb26263624f2df0b5968f40d