Add per-service-option startup & executable

Also fixes display issue on front-end where users could see and edit
hidden settings
Fixes a bug in relation to #57

database/migrations/2016_02_13_154306_add_service_option_default_startup.php

@@ -0,0 +1,33 @@
+<?php
+
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Database\Migrations\Migration;
+
+class AddServiceOptionDefaultStartup extends Migration
+{
+    /**
+     * Run the migrations.
+     *
+     * @return void
+     */
+    public function up()
+    {
+        Schema::table('service_options', function (Blueprint $table) {
+            $table->text('executable')->after('docker_image')->nullable()->default(null);
+            $table->text('startup')->after('executable')->nullable()->default(null);
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     *
+     * @return void
+     */
+    public function down()
+    {
+        Schema::table('service_options', function (Blueprint $table) {
+            $table->dropColumn('executable');
+            $table->dropColumn('startup');
+        });
+    }
+}