keyEvent: replace the unclear StandardKey comparisons

StandardKey.MoveToNextLine, StandardKey.MoveToPreviousLine
and StandardKey.InsertParagraphSeparator maybe confusing and
better to be replaced by direct key comparisons

Change-Id: I13361a43437214b9368d01a97b2e542f57835964

src/commoncomponents/BackButton.qml

@@ -31,7 +31,8 @@ PushButton {
     toolTipText: JamiStrings.back
 
     Keys.onPressed: function (keyEvent) {
-        if (keyEvent.matches(StandardKey.InsertParagraphSeparator)) {
+        if (keyEvent.key === Qt.Key_Enter ||
+                keyEvent.key === Qt.Key_Return) {
             clicked()
             keyEvent.accepted = true
         }

src/commoncomponents/JamiSwitch.qml

@@ -54,7 +54,8 @@ Switch {
     }
 
     Keys.onPressed: function (keyEvent) {
-        if (keyEvent.matches(StandardKey.InsertParagraphSeparator)) {
+        if (keyEvent.key === Qt.Key_Enter ||
+                keyEvent.key === Qt.Key_Return) {
             checked = !checked
             keyEvent.accepted = true
         }

src/commoncomponents/MaterialButton.qml

@@ -191,7 +191,8 @@ Button {
     }
 
     Keys.onPressed: function (keyEvent) {
-        if (keyEvent.matches(StandardKey.InsertParagraphSeparator)) {
+        if (keyEvent.key === Qt.Key_Enter ||
+                keyEvent.key === Qt.Key_Return) {
             clicked()
             keyEvent.accepted = true
         }

src/commoncomponents/PhotoboothView.qml

@@ -198,10 +198,11 @@ Item {
                             JamiResources.baseline_camera_alt_24dp_svg
 
                 Keys.onPressed: function (keyEvent) {
-                    if (keyEvent.matches(StandardKey.InsertParagraphSeparator)) {
+                    if (keyEvent.key === Qt.Key_Enter ||
+                            keyEvent.key === Qt.Key_Return) {
                         clicked()
                         keyEvent.accepted = true
-                    } else if (keyEvent.matches(StandardKey.MoveToPreviousLine)) {
+                    } else if (keyEvent.key === Qt.Key_Up) {
                         root.focusOnPreviousItem()
                         keyEvent.accepted = true
                     }
@@ -245,11 +246,12 @@ Item {
                 KeyNavigation.up: takePhotoButton
 
                 Keys.onPressed: function (keyEvent) {
-                    if (keyEvent.matches(StandardKey.InsertParagraphSeparator)) {
+                    if (keyEvent.key === Qt.Key_Enter ||
+                            keyEvent.key === Qt.Key_Return) {
                         clicked()
                         takePhotoButton.forceActiveFocus()
                         keyEvent.accepted = true
-                    } else if (keyEvent.matches(StandardKey.MoveToNextLine) ||
+                    } else if (keyEvent.key === Qt.Key_Down ||
                                keyEvent.key === Qt.Key_Tab) {
                         if (isPreviewing) {
                             root.focusOnNextItem()
@@ -283,11 +285,12 @@ Item {
                 imageColor: JamiTheme.textColor
 
                 Keys.onPressed: function (keyEvent) {
-                    if (keyEvent.matches(StandardKey.InsertParagraphSeparator)) {
+                    if (keyEvent.key === Qt.Key_Enter ||
+                            keyEvent.key === Qt.Key_Return) {
                         focusAfterFileDialogClosed = true
                         clicked()
                         keyEvent.accepted = true
-                    } else if (keyEvent.matches(StandardKey.MoveToNextLine) ||
+                    } else if (keyEvent.key === Qt.Key_Down ||
                                keyEvent.key === Qt.Key_Tab) {
                         root.focusOnNextItem()
                         keyEvent.accepted = true

src/mainview/components/ContactSearchBar.qml

@@ -134,7 +134,8 @@ Rectangle {
     }
 
     Keys.onPressed: function (keyEvent) {
-        if (keyEvent.matches(StandardKey.InsertParagraphSeparator)) {
+        if (keyEvent.key === Qt.Key_Enter ||
+                keyEvent.key === Qt.Key_Return) {
             if (contactSearchBar.text !== "") {
                 returnPressedWhileSearching()
                 keyEvent.accepted = true

src/mainview/components/MessageBarTextArea.qml

@@ -138,7 +138,8 @@ Flickable {
             if (keyEvent.matches(StandardKey.Paste)) {
                 MessagesAdapter.pasteKeyDetected()
                 keyEvent.accepted = true
-            } else if (keyEvent.matches(StandardKey.InsertParagraphSeparator)) {
+            } else if (keyEvent.key === Qt.Key_Enter ||
+                       keyEvent.key === Qt.Key_Return) {
                 if (!(keyEvent.modifiers & Qt.ShiftModifier)) {
                     root.sendMessagesRequired()
                     keyEvent.accepted = true

src/wizardview/components/ProfilePage.qml

@@ -154,7 +154,7 @@ Rectangle {
             KeyNavigation.down: KeyNavigation.tab
 
             Keys.onPressed: function (keyEvent) {
-                if (keyEvent.matches(StandardKey.MoveToPreviousLine)) {
+                if (keyEvent.key === Qt.Key_Up) {
                     setAvatarWidget.focusOnPreviousPhotoBoothItem()
                     keyEvent.accepted = true
                 }
@@ -221,7 +221,7 @@ Rectangle {
             KeyNavigation.up: saveProfileBtn
 
             Keys.onPressed: function (keyEvent) {
-                if (keyEvent.matches(StandardKey.MoveToNextLine) ||
+                if (keyEvent.key === Qt.Key_Down ||
                         keyEvent.key === Qt.Key_Tab) {
                     setAvatarWidget.focusOnNextPhotoBoothItem()
                     keyEvent.accepted = true