Hello utu,

To please you and bring back nautilus and still have gedit 3.14 working, I now did this:

1. With Synaptic:
Removed libnautilusextension1a 3.18 (testing)
Installed libnautilusextension1a 3.14 (stable)

2. With Synaptic:
Installed nautilus-data 3.14

3.
Downloaded the Debian package:
nautilus_3.14.1-2_i386.deb

4. With gdebi:
Installed the above-mentioned .deb package.