Allow dropping connections from the welcome page

This is the last piece required to make sure that we can recover from broken connections, e.g., when the access token is invalid.

src/qml/WelcomePage.qml

@@ -70,9 +70,45 @@ FormCard.FormCardPage {
         Repeater {
             id: loadingAccounts
             model: Controller.accountsLoading
-            delegate: FormCard.FormButtonDelegate {
-                text: i18nc("As in 'this account is still loading'", "%1 (loading)", modelData)
-                enabled: false
+            delegate: FormCard.AbstractFormDelegate {
+                id: loadingDelegate
+
+                topPadding: Kirigami.Units.smallSpacing
+                bottomPadding: Kirigami.Units.smallSpacing
+
+                background: null
+                contentItem: RowLayout {
+                    spacing: 0
+
+                    QQC2.Label {
+                        Layout.fillWidth: true
+                        text: i18nc("As in 'this account is still loading'", "%1 (loading)", modelData)
+                        elide: Text.ElideRight
+                        wrapMode: Text.Wrap
+                        maximumLineCount: 2
+                        color: Kirigami.Theme.disabledTextColor
+                        Accessible.ignored: true // base class sets this text on root already
+                    }
+
+                    QQC2.ToolButton {
+                        text: i18nc("@action:button", "Remove this account")
+                        icon.name: "edit-delete-remove"
+                        onClicked: Controller.removeConnection(modelData)
+                        display: QQC2.Button.IconOnly
+                        QQC2.ToolTip.text: text
+                        QQC2.ToolTip.visible: hovered
+                        QQC2.ToolTip.delay: Kirigami.Units.toolTipDelay
+                        enabled: true
+                        Layout.preferredHeight: Kirigami.Units.gridUnit * 2
+                    }
+
+                    FormCard.FormArrow {
+                        Layout.leftMargin: Kirigami.Units.smallSpacing
+                        Layout.alignment: Qt.AlignRight | Qt.AlignVCenter
+                        direction: Qt.RightArrow
+                        visible: root.background.visible
+                    }
+                }
             }
         }
     }