repo view: replace non-clickable checkbox with icons

From a usability view, having a checkbox that is not clickable is pretty
misleading, especially if the visual style is exactly the same as in
other places in the UI where the checkbox is functional.

Signed-off-by: Lukas Wagner <l.wagner@proxmox.com>

src/Utils.js

@@ -100,6 +100,8 @@ utilities: {
 	return value;
     },
 
+    renderEnabledIcon: enabled => `<i class="fa fa-${enabled ? 'check' : 'minus'}"></i>`,
+
     language_array: function() {
 	let data = [['__default__', Proxmox.Utils.render_language('')]];
 	Ext.Object.each(Proxmox.Utils.language_map, function(key, value) {

src/node/APTRepositories.js

@@ -239,12 +239,10 @@ Ext.define('Proxmox.node.APTRepositoriesGrid', {
 
     columns: [
 	{
-	    xtype: 'checkcolumn',
 	    header: gettext('Enabled'),
 	    dataIndex: 'Enabled',
-	    listeners: {
-		beforecheckchange: () => false, // veto, we don't want to allow inline change - to subtle
-	    },
+	    align: 'center',
+	    renderer: Proxmox.Utils.renderEnabledIcon,
 	    width: 90,
 	},
 	{