qml: use Pay... on buttons where payment is not immediate on press, fix trustedcoin icon in OtpDialog

electrum/gui/qml/components/InvoiceDialog.qml

@@ -435,7 +435,7 @@ ElDialog {
             FlatButton {
                 Layout.fillWidth: true
                 Layout.preferredWidth: 1
-                text: qsTr('Pay')
+                text: qsTr('Pay...')
                 icon.source: '../../icons/confirmed.png'
                 enabled: invoice.invoiceType != Invoice.Invalid && invoice.canPay
                 onClicked: {

electrum/gui/qml/components/LnurlPayRequestDialog.qml

@@ -131,7 +131,7 @@ ElDialog {
         FlatButton {
             Layout.topMargin: constants.paddingLarge
             Layout.fillWidth: true
-            text: qsTr('Pay')
+            text: qsTr('Pay...')
             icon.source: '../../icons/confirmed.png'
             enabled: valid
             onClicked: {

electrum/gui/qml/components/OtpDialog.qml

@@ -11,7 +11,7 @@ ElDialog {
     id: dialog
 
     title: qsTr('Trustedcoin')
-    iconSource: '../../../icons/trustedcoin-status.png'
+    iconSource: Qt.resolvedUrl('../../../plugins/trustedcoin/trustedcoin-status.png')
 
     property string otpauth