Full Read thru edits

Here are my overall edits. It looks pretty good to me!
CACTus is the acronym, so I would suggest to write this as:
```latex
by the Computer Aided CME Tracking feature recognition algorithm
\citep[CACTus - \url{http://sidc.oma.be/cactus/};][]{robbrecht_automated_2009}.}
```
To avoid two parenthesis in a row.