Added tests for XosTable Component

Change-Id: I78fbb53176fc02e547bde316580c943eecd3d51f
diff --git a/src/app/core/table/array-to-list.filter.ts b/src/app/core/table/array-to-list.filter.ts
new file mode 100644
index 0000000..ff5ab38
--- /dev/null
+++ b/src/app/core/table/array-to-list.filter.ts
@@ -0,0 +1,8 @@
+export function ArrayToListFilter() {
+  return (input: any) => {
+    if (!angular.isArray(input)) {
+      return input;
+    }
+    return input.join(', ');
+  };
+}