TUT: update for new finite-area location (with foamUpgradeFiniteArea)

tutorials/wolfsgrube_mixed/0.orig/finite-area/Us1

tutorials/wolfsgrube_mixed/0.orig/finite-area/Us2

tutorials/wolfsgrube_mixed/0.orig/finite-area/c2

tutorials/wolfsgrube_mixed/0.orig/finite-area/h1

tutorials/wolfsgrube_mixed/0.orig/finite-area/h2

tutorials/wolfsgrube_mixed/0.orig/finite-area/hentrain

tutorials/wolfsgrube_mixed/0.orig/finite-area/k

...ials/wolfsgrube_mixed/system/finite-area/faMeshDefinition

tutorials/wolfsgrube_mixed/system/finite-area/faSchemes

tutorials/wolfsgrube_mixed/system/finite-area/faSolution