[ACA-3427] Remove About tab when it's not useful (#1491)

* [ACA-3427] Remove About tab when it's  not useful

* Add unit tests for isLibraryManager rule

* Fix e2e tests

* Fix e2e tests and add rule to docs

* Fix e2e tests

projects/aca-shared/rules/src/app.rules.spec.ts

@@ -475,4 +475,34 @@ describe('app.evaluators', () => {
       expect(app.canShowLogout(context)).toBe(true);
     });
   });
+
+  describe('isLibraryManager', () => {
+    it('should return true when role is SiteManager', () => {
+      const context: any = {
+        selection: {
+          library: {
+            entry: {
+              role: 'SiteManager'
+            }
+          }
+        }
+      };
+
+      expect(app.isLibraryManager(context)).toBe(true);
+    });
+
+    it('should return false when role is different than SiteManager', () => {
+      const context: any = {
+        selection: {
+          library: {
+            entry: {
+              role: 'SiteCollaborator'
+            }
+          }
+        }
+      };
+
+      expect(app.isLibraryManager(context)).toBe(false);
+    });
+  });
 });

projects/aca-shared/rules/src/app.rules.ts

@@ -546,3 +546,16 @@ export function canShowLanguagePicker(context: AcaRuleContext): boolean {
 export function canShowLogout(context: AcaRuleContext): boolean {
   return !context.withCredentials;
 }
+
+/**
+ * Checks if user is library manager
+ * JSON ref: `isLibraryManager`
+ * @param context Rule execution context
+ */
+export function isLibraryManager(context: RuleContext): boolean {
+  return (
+    hasLibrarySelected(context) &&
+    context.selection.library.entry &&
+    context.selection.library.entry.role === 'SiteManager'
+  );
+}