Also add earlier/later journey search actions to the context menu

Improves discoverability over the slightly unusual placement above and
below the list view.

src/app/DepartureQueryPage.qml

@@ -18,6 +18,20 @@ Kirigami.ScrollablePage {
 
     id: root
     title: i18n("Departures")
+    contextualActions: [
+        Kirigami.Action {
+            text: i18n("Earlier")
+            iconName: "go-up-symbolic"
+            onTriggered: departureModel.queryPrevious()
+            enabled: departureModel.canQueryPrevious
+        },
+        Kirigami.Action {
+            text: i18n("Later")
+            iconName: "go-down-symbolic"
+            onTriggered: departureModel.queryNext()
+            enabled: departureModel.canQueryNext
+        }
+    ]
 
     StopoverQueryModel {
         id: departureModel

src/app/JourneyQueryPage.qml

@@ -18,6 +18,21 @@ Kirigami.ScrollablePage {
 
     id: root
     title: i18n("Alternative Connections")
+    contextualActions: [
+        Kirigami.Action {
+            text: i18n("Earlier")
+            iconName: "go-up-symbolic"
+            onTriggered: journeyModel.queryPrevious()
+            enabled: journeyModel.canQueryPrevious
+        },
+        Kirigami.Action {
+            text: i18n("Later")
+            iconName: "go-down-symbolic"
+            onTriggered: journeyModel.queryNext()
+            enabled: journeyModel.canQueryNext
+        }
+    ]
+
 
     JourneyQueryModel {
         id: journeyModel

src/app/TransferPage.qml

@@ -49,6 +49,18 @@ Kirigami.ScrollablePage {
                     TransferManager.discardTransfer(root.transfer);
                     applicationWindow().pageStack.pop();
                 }
+            },
+            Kirigami.Action {
+                text: i18n("Earlier")
+                iconName: "go-up-symbolic"
+                onTriggered: journeyModel.queryPrevious()
+                enabled: journeyModel.canQueryPrevious
+            },
+            Kirigami.Action {
+                text: i18n("Later")
+                iconName: "go-down-symbolic"
+                onTriggered: journeyModel.queryNext()
+                enabled: journeyModel.canQueryNext
             }
         ]
     }