Update paths to boxparser.py

When building sdaps, I received an error when trying to open boxparser.py
```bash
xgettext: error while opening "./../sdaps/setup/boxesparser.py" for reading: No such file or directory
ERROR: xgettext failed to generate PO template file. Please consult
       error message above if there is any.
error: command 'intltool-update' failed with exit status 1
```
I noticed there was a small refactor not long ago so I updated the paths I could find and installation completed without problems.