feat(opds): added books catalog from standardebooks.org (#2681)

apps/readest-app/src/app/opds/components/CatelogManager.tsx

@@ -21,6 +21,13 @@ const POPULAR_CATALOGS: OPDSCatalog[] = [
     description: "World's largest collection of free ebooks",
     icon: '🏛️',
   },
+  {
+    id: 'standardebooks',
+    name: 'Standard Ebooks',
+    url: 'https://standardebooks.org/feeds/opds',
+    description: 'Free and liberated ebooks, carefully produced for the true book lover',
+    icon: '📚',
+  },
   {
     id: 'manybooks',
     name: 'ManyBooks',
@@ -28,20 +35,12 @@ const POPULAR_CATALOGS: OPDSCatalog[] = [
     description: 'Over 50,000 free ebooks',
     icon: '📖',
   },
-  {
-    id: 'standardebooks',
-    name: 'Standard Ebooks',
-    url: 'https://standardebooks.org/feeds/opds',
-    description: 'Carefully formatted and lovingly produced free ebooks',
-    icon: '📚',
-    disabled: true,
-  },
   {
     id: 'unglue.it',
     name: 'Unglue.it',
     url: 'https://unglue.it/api/opds/',
     description: 'Free ebooks from authors who have "unglued" their books',
-    icon: '📚',
+    icon: '🔓',
   },
 ];