Fixed QCAD in tpetra branch so it can be turned on, but run only with the Albany executable.

Added warning to print if you turn on QCAD with ALBANY_EPETRA_EXE off, as there is no AlbanyT executable
for QCAD.

Updated to-do list.  Updated nightly test scripts to QCAD is turned on / tested.
Merge branch 'tpetra' of github.com:gahansen/Albany into tpetra