Revert "Compiled pdf contaning SV, SCG, AL edits."

This reverts commit 3f2a7de01354fad5b43790452d234e1d033e003a.
Revert "Integrated changes from SV, SCG, AL."

This reverts commit b8d3a784897e25b9006016ab9a1018806d8e8ace.
Revert "Added XRF comments to paper."

This reverts commit 620397aef7a0640a1bbf9a341243c5da20ef1b92.
The previous 3 reverts are because I started editing from the master rather than the develop branch. I reverted to Francesco's last commit (620397) and added the XRF edits from there.