HBoxPopup: split text into summary and details

src/qml/Base/HBoxPopup.qml

@@ -10,8 +10,8 @@ HPopup {
     signal cancel()
 
 
-    property alias label: label
-    property alias text: label.text
+    property alias summary: summary
+    property alias details: details
     property bool okClicked: false
 
 
@@ -27,8 +27,18 @@ HPopup {
 
 
     HLabel {
-        id: label
+        id: summary
         wrapMode: Text.Wrap
+        font.bold: true
+        visible: Boolean(text)
+
+        Layout.fillWidth: true
+    }
+
+    HLabel {
+        id: details
+        wrapMode: Text.Wrap
+        visible: Boolean(text)
 
         Layout.fillWidth: true
     }

src/qml/Chat/ClearMessagesPopup.qml

@@ -2,8 +2,8 @@ import QtQuick 2.12
 import "../Base"
 
 HBoxPopup {
-    text: qsTr(
-        "Clear this room's messages?\n" +
+    summary.text: qsTr("Clear this room's messages?")
+    details.text: qsTr(
         "The messages will only be removed on your side. " +
         "They will be available again after you restart the application."
     )

src/qml/Pages/EditAccount/ImportExportKeys.qml

@@ -62,7 +62,7 @@ HBox {
         property url file: ""
 
         id: exportPasswordPopup
-        label.text: qsTr("Please enter a passphrase to protect this file:")
+        details.text: qsTr("Please enter a passphrase to protect this file:")
         onAcceptedPasswordChanged:
             encryptionUI.exportKeys(file, acceptedPassword, exportButton)
     }
@@ -79,7 +79,7 @@ HBox {
         }
 
         id: importPasswordPopup
-        label.text: qsTr(
+        details.text: qsTr(
             "Please enter the passphrase that was used to protect this file:"
         )
         onAcceptedPasswordChanged: