chown copied files to user who is installing this software

after running `sudo sh setup.sh`

```bash
cp -f ../nemakisolr/src/main/webapp/WEB-INF/classes/tracking.properties.template ../nemakisolr/src/main/webapp/WEB-INF/classes/tracking.properties
cp -f ../nemakishare/config/latest_change_token.yml.template ../nemakishare/config/latest_change_token.yml
```

those two files became owned by root