misc: don't perpetually run animations for invisible items

Change-Id: I2f49190c652a4ee99b3480dfcdbf8eef92cffa12
Gitlab: #710

src/commoncomponents/SpinningAnimation.qml

@@ -47,6 +47,7 @@ Item {
         }
 
         RotationAnimation on angle {
+            running: root.visible
             loops: Animation.Infinite
             duration: spinningAnimationDuration
             from: 0
@@ -88,6 +89,7 @@ Item {
         }
 
         RotationAnimation on angle {
+            running: root.visible
             loops: Animation.Infinite
             duration: spinningAnimationDuration
             from: 180.0

src/mainview/components/MainOverlay.qml

@@ -213,7 +213,7 @@ Item {
 
                 SequentialAnimation on color {
                     loops: Animation.Infinite
-                    running: true
+                    running: recordingRect.visible
                     ColorAnimation {
                         from: JamiTheme.recordIconColor
                         to: "transparent"