Rename QML singleton to "ovras.advsettings"

This is more generic and in line with the rest of the renames.

src/res/qml/utilities_page/UtilitiesPage.qml

@@ -1,7 +1,7 @@
 import QtQuick 2.7
 import QtQuick.Controls 2.0
 import QtQuick.Layouts 1.3
-import matzman666.advsettings 1.0
+import ovras.advsettings 1.0
 import "media_keys"
 import "alarm_clock"
 import "desktop_size"

src/res/qml/utilities_page/alarm_clock/AlarmGroupBox.qml

@@ -1,7 +1,7 @@
 import QtQuick 2.7
 import QtQuick.Controls 2.0
 import QtQuick.Layouts 1.3
-import matzman666.advsettings 1.0
+import ovras.advsettings 1.0
 import "../../common"
 
 GroupBox {

src/res/qml/utilities_page/desktop_size/SteamDesktopGroupBox.qml

@@ -1,7 +1,7 @@
 import QtQuick 2.7
 import QtQuick.Controls 2.0
 import QtQuick.Layouts 1.3
-import matzman666.advsettings 1.0
+import ovras.advsettings 1.0
 import "../../common"
 
 GroupBox {

src/res/qml/utilities_page/keyboard_utils/KeyboardGroupBox.qml

@@ -1,7 +1,7 @@
 import QtQuick 2.7
 import QtQuick.Controls 2.0
 import QtQuick.Layouts 1.3
-import matzman666.advsettings 1.0
+import ovras.advsettings 1.0
 import "../../common"
 
 GroupBox {

src/res/qml/utilities_page/media_keys/MediaButton.qml

@@ -1,7 +1,7 @@
 import QtQuick 2.7
 import QtQuick.Controls 2.0
 import QtQuick.Layouts 1.3
-import matzman666.advsettings 1.0
+import ovras.advsettings 1.0
 import "../../common"
 
 MyPushButton2 {

src/res/qml/utilities_page/media_keys/MediaControllerKeys.qml

@@ -1,7 +1,7 @@
 import QtQuick 2.7
 import QtQuick.Controls 2.0
 import QtQuick.Layouts 1.3
-import matzman666.advsettings 1.0
+import ovras.advsettings 1.0
 import "../../common"
 
 GroupBox {