Added audit log interface

- Displays the currently tracked activities in the system.

Related to #2173 and #1167

database/migrations/2020_09_19_094251_add_activity_indexes.php

@@ -0,0 +1,34 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+class AddActivityIndexes extends Migration
+{
+    /**
+     * Run the migrations.
+     *
+     * @return void
+     */
+    public function up()
+    {
+        Schema::table('activities', function(Blueprint $table) {
+            $table->index('key');
+            $table->index('created_at');
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     *
+     * @return void
+     */
+    public function down()
+    {
+        Schema::table('activities', function(Blueprint $table) {
+            $table->dropIndex('key');
+            $table->dropIndex('created_at');
+        });
+    }
+}