QML: remove version numbers from Qt imports

Remove version numbers from QML import statements which import modules
from the Qt standard libraries. The Qt 6 documentation doesn't show
these version numbers, so I guess they are discouraged now. Also I got
an error from `import QtQuick 1.2` - the version is apparently too old.

In any case the version imports can't be a reliable way of controlling
behavior since if multiple documents import different version numbers of
the same module, the highest one will win.

Also remove version numbers from the imports of QmlDownloader from our
own program since that's clearly pointless.

Author: slipher

DownloadInfo.qml

@@ -15,12 +15,12 @@
  * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
-import QtQuick 2.0
-import QtQuick.Controls 2.1
-import QtQuick.Controls.Material 2.0
 import Fluid.Controls 1.0 as FluidControls
 import Fluid.Material 1.0 as FluidMaterial
 import QmlDownloader 1.0
+import QtQuick 
+import QtQuick.Controls
+import QtQuick.Controls.Material
 import "utils.js" as Utils
 
 Item {

News.qml

@@ -15,11 +15,11 @@
  * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
-import QtQuick 2.0
-import QtQuick.Controls 2.1
-import QtQuick.Controls.Material 2.0
 import Fluid.Controls 1.0 as FluidControls
 import Fluid.Material 1.0 as FluidMaterial
+import QtQuick
+import QtQuick.Controls
+import QtQuick.Controls.Material
 
 Item {
     width: parent.width

NewsCard.qml

@@ -15,11 +15,11 @@
  * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
-import QtQuick 2.0
-import QtQuick.Controls 2.0
-import QtQuick.Controls.Material 2.0
 import Fluid.Controls 1.0 as FluidControls
-import QtQuick.Layouts 1.3
+import QtQuick.Layouts
+import QtQuick
+import QtQuick.Controls
+import QtQuick.Controls.Material
 
 Flickable {
     id: item

Settings.qml

@@ -15,14 +15,14 @@
  * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
-import QtQuick 2.0
-import QtQuick.Controls 2.1
-import QtQuick.Controls.Material 2.0
-import QtQuick.Dialogs 1.2
-import QtQuick.Layouts 1.3
 import Fluid.Controls 1.0 as FluidControls
 import Fluid.Material 1.0 as FluidMaterial
-import QmlDownloader 1.0
+import QtQuick
+import QtQuick.Controls
+import QtQuick.Controls.Material
+import QtQuick.Dialogs
+import QtQuick.Layouts
+import QmlDownloader
 
 Item {
     id: settingsItem

UpdateFailed.qml

@@ -15,10 +15,10 @@
  * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
-import QtQuick 2.7
-import QtQuick.Controls 2.0
-import QtQuick.Controls.Material 2.0
 import Fluid.Controls 1.0 as FluidControls
+import QtQuick
+import QtQuick.Controls
+import QtQuick.Controls.Material
 import "utils.js" as Utils
 
 Popup {

main.qml

@@ -15,11 +15,11 @@
  * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
-import QtQuick 2.7
-import QtQuick.Controls 2.0
-import QtQuick.Controls.Material 2.0
 import Fluid.Controls 1.0 as FluidControls
 import Fluid.Material 1.0 as FluidMaterial
+import QtQuick
+import QtQuick.Controls
+import QtQuick.Controls.Material
 import "utils.js" as Utils
 
 ApplicationWindow {

splash.qml

@@ -15,11 +15,11 @@
  * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
-import QtQuick 2.0
-import QtQuick.Controls 2.0
-import QtQuick.Controls.Material 2.0
 import Fluid.Controls 1.0 as FluidControls
 import Fluid.Material 1.0 as FluidMaterial
+import QtQuick
+import QtQuick.Controls
+import QtQuick.Controls.Material
 
 ApplicationWindow {
     visible: true