Update sizing function calls to work on all volumes.

Previous version of journal script imported the sizing function one
volume at a time by looping over volumes. This causes CUBIT 14.0 and
14.1 to crash. Switching to importing over all volumes is faster and
prevents the crashes. This also seems to be ok in CUBIT 13.2.
Merge branch 'baagaard/fix-cubit-cellsize'

* baagaard/fix-cubit-cellsize:
  Update sizing function calls to work on all volumes.