More qml cleanups

resources/qml/CommunitiesList.qml

resources/qml/Completer.qml

resources/qml/MatrixTextField.qml

resources/qml/MessageInput.qml

resources/qml/MessageView.qml

resources/qml/PrivacyScreen.qml

resources/qml/QuickSwitcher.qml

resources/qml/RoomList.qml

resources/qml/Root.qml

resources/qml/TimelineBubbleMessageStyle.qml

resources/qml/TimelineDefaultMessageStyle.qml

resources/qml/TimelineEvent.qml

resources/qml/TimelineMetadata.qml

resources/qml/TimelineSectionHeader.qml

resources/qml/TimelineView.qml

resources/qml/ToggleButton.qml

resources/qml/device-verification/EmojiElement.qml

resources/qml/dialogs/AliasEditor.qml

resources/qml/dialogs/AllowedRoomsSettingsDialog.qml

resources/qml/dialogs/ConfirmJoinRoomDialog.qml