Add support for viewing avatar images in full size

resources/qml/Avatar.qml

@@ -9,6 +9,8 @@ Rectangle {
     property alias url: img.source
     property string userid
     property string displayName
+ 
+    property string usrUrl: TimelineManager.timeline.avatarUrl(userid)
 
     width: 48
     height: 48
@@ -49,6 +51,14 @@ Rectangle {
 
         }
 
+        MouseArea {
+            id: mouseArea
+
+            anchors.fill: parent
+            onClicked: {
+                TimelineManager.openImageOverlay(usrUrl, TimelineManager.timeline.data.id)
+            }
+        }
     }
 
     Rectangle {

src/timeline/TimelineViewManager.cpp

@@ -339,6 +339,7 @@ TimelineViewManager::toggleCameraView()
 void
 TimelineViewManager::openImageOverlay(QString mxcUrl, QString eventId) const
 {
+        if (mxcUrl.isEmpty() || mxcUrl.isNull()) { return; }
         QQuickImageResponse *imgResponse =
           imgProvider->requestImageResponse(mxcUrl.remove("mxc://"), QSize());
         connect(imgResponse, &QQuickImageResponse::finished, this, [this, eventId, imgResponse]() {