Missing dependencies in libpdfbox-java

Hi,

There is a couple of missing dependencies for libpdfbox-java in Ubuntu 16.04.

tadam@ubuntuvm:~$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 16.04.2 LTS
Release: 16.04
Codename: xenial

tadam@ubuntuvm:~$ apt-cache policy libpdfbox-java
libpdfbox-java:
  Installed: 1:1.8.11+dfsg-1
  Candidate: 1:1.8.11+dfsg-1
  Version table:
 *** 1:1.8.11+dfsg-1 500
        500 http://gb.archive.ubuntu.com/ubuntu xenial/universe amd64 Packages
        500 http://gb.archive.ubuntu.com/ubuntu xenial/universe i386 Packages
        100 /var/lib/dpkg/status

tadam@ubuntuvm:~$ apt-cache show libpdfbox-java | grep Depends
Depends: libfontbox-java

If you check the POM file for pdfbox https://anonscm.debian.org/cgit/pkg-java/libpdfbox-java.git/tree/pdfbox/pom.xml, then you can see that two additional dependencies should be provided for this package:
- libjempbox-java
- libcommons-logging-java
The rest of the dependencies are marked as optional, so probably it's OK that they are not provided.

libfontbox-java misses libcommons-logging-java dependency as well.