qml: linux qml compile requirements update

Change-Id: Ib8466fcfc7d9650d206d5bea88be98c6aecbe584

README.md

@@ -154,11 +154,11 @@ LRC)](#How_to_Build_LibRingClient_(or_LRC) "wikilink") sections.
 
 - For Debian based:
 ```bash
-    sudo apt install qtmultimedia5-dev libqt5svg5* qtwebengine5-dev qtdeclarative5-dev pandoc
+    sudo apt install qtmultimedia5-dev libqt5svg5* qtwebengine5-dev qtdeclarative5-dev qtquickcontrols2-5-dev qml-module-qtquick* pandoc
 ```
 - For Fedora:
 ```bash
-    sudo dnf install qt5-qtsvg-devel qt5-qtwebengine-devel qt5-multimedia-devel qt5-qtdeclarative-devel pandoc
+    sudo dnf install qt5-qtsvg-devel qt5-qtwebengine-devel qt5-qtmultimedia-devel qt5-qtdeclarative-devel qt5-qtquickcontrols2-devel pandoc
 ```
 
 **Build Windows Client**

jami-qt.pro

@@ -75,7 +75,7 @@ unix {
     TARGET = jami-qt
     TEMPLATE = app
 
-    QT += quick quickwidgets widgets xml multimedia multimediawidgets network webenginewidgets svg
+    QT += quick quickwidgets widgets xml multimedia multimediawidgets network webenginewidgets svg quickcontrols2
 
     #check Qt version
     QT_VERSION = $$[QT_VERSION]

src/widgethelpers.h

@@ -28,7 +28,6 @@
 #include <QPainter>
 #include <QPixmap>
 
-#include <QtQML>
 #include <QQmlApplicationEngine>
 #include <QQmlContext>
 #include <QQmlComponent>