Fixing ubuntu package dependency for 15.10 image

Tuleap: #553
Change-Id: Ifcbfd0bde2ebda340b9d3e27618d8d7fd5f7fb0b

docker/ubuntu_15.10/Dockerfile

@@ -6,5 +6,7 @@ RUN apt-get install -y devscripts debianutils debhelper build-essential tar rsyn
  libasound2-dev libexpat1-dev libpcre3-dev libyaml-cpp-dev libboost-dev \
  libdbus-c++-dev libsndfile1-dev libsrtp-dev libxext-dev libgnutls-dev \
  libxfixes-dev yasm autopoint unbound-anchor git-core libspeex-dev \
- libspeexdsp-dev autotools-dev chrpath check astyle \
+ libspeexdsp-dev autotools-dev chrpath check astyle libupnp-dev qtbase5-dev \
+ libgnutls28-dev libebook1.2-dev gnome-icon-theme-symbolic libclutter-gtk-1.0-dev \
+ libclutter-1.0-dev libgtk-3-dev libnotify-dev qttools5-dev-tools qttools5-dev \
  uuid-dev libudev-dev cmake --fix-missing