Finish front-end server creation page.

database/migrations/2015_12_10_223449_allow_null_regex.php

@@ -0,0 +1,29 @@
+<?php
+
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Database\Migrations\Migration;
+
+class AllowNullRegex extends Migration
+{
+    /**
+     * Run the migrations.
+     *
+     * @return void
+     */
+    public function up()
+    {
+        Schema::table('service_variables', function (Blueprint $table) {
+            $table->string('regex')->nullable()->change();
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     *
+     * @return void
+     */
+    public function down()
+    {
+        DB::statement('ALTER TABLE `service_variables` MODIFY `regex` VARCHAR(255) NOT NULL');
+    }
+}