Fix Ubuntu 18.04 compatibility

Author: ThePBone

README.md

@@ -53,6 +53,7 @@ This GUI requires the following dependencies:
 
 Dependencies for Debian-based distros:
 ```bash
+sudo apt install libgstreamer-plugins-base1.0-dev libgstreamer1.0-dev gstreamer-1.0 gstreamer1.0-plugins-bad libgstreamer-plugins-bad1.0-dev
 sudo apt install qtbase5-dev qtmultimedia5-dev libqt5svg5-dev  
 sudo apt install libqt5core5a libqt5dbus5 libqt5gui5 libqt5multimedia5 libqt5svg5 libqt5xml5 libqt5network5
 ```

deployment/build_deb_package.sh

@@ -34,7 +34,7 @@ Version: $base_version-$TRAVIS_BUILD_NUMBER
 Section: sound
 Priority: optional
 Architecture: amd64
-Depends: libqt5multimedia5 (>= 5.9.5), libqt5xml5 (>= 5.9.5), libqt5svg5 (>= 5.9.5), qtbase5-dev (>= 5.9.5), libqt5core5a (>= 5.9.5), libqt5widgets5 (>= 5.9.5), libqt5gui5 (>= 5.9.5), libqt5core5a (>= 5.9.5), libgl1-mesa-dev
+Depends: libqt5multimedia5 (>= 5.9.5), libqt5xml5 (>= 5.9.5), libqt5svg5 (>= 5.9.5), qtbase5-dev (>= 5.9.5), libqt5core5a (>= 5.9.5), libqt5widgets5 (>= 5.9.5), libqt5gui5 (>= 5.9.5), libqt5core5a (>= 5.9.5), libgl1-mesa-dev, libgstreamer-plugins-base1.0-dev, libgstreamer1.0-dev, gstreamer-1.0, gstreamer1.0-plugins-bad, libgstreamer-plugins-bad1.0-dev
 Maintainer: ThePBone <tim.schneeberger@gmail.com>
 Description: Official UI for Viper4Linux
 Homepage: https://github.com/Audio4Linux/Viper4Linux-GUI