Added services

This commit moves most controller logic onto Services. Services are part of the Service-Repository pattern. The models act as repositories.

Services are easily testable and are needed for the upcoming API, in order to avoid duplicated code and to maintain a single source of "truth".

 The User, Vacancy and Vote controllers still need their logic moved onto services.

app/Services/SecuritySettingsService.php

@@ -0,0 +1,54 @@
+<?php
+
+
+namespace App\Services;
+
+
+use App\Facades\Options;
+use Illuminate\Support\Facades\Log;
+
+class SecuritySettingsService
+{
+
+    /**
+     * Saves the app security settings.
+     *
+     * @param $policy
+     * @param array $options
+     * @return bool
+     */
+    public function save($policy, $options = []) {
+
+        $validPolicies = [
+            'off',
+            'low',
+            'medium',
+            'high'
+        ];
+
+        if (in_array($policy, $validPolicies))
+        {
+            Options::changeOption('pw_security_policy', $policy);
+
+            Log::debug('[Options] Changing option pw_security_policy', [
+                'new_value' => $policy
+            ]);
+        }
+        else
+        {
+            Log::debug('[WARN] Ignoring bogus policy', [
+                'avaliable' => $validPolicies,
+                'given' => $policy
+            ]);
+        }
+
+        Options::changeOption('graceperiod', $options['graceperiod']);
+        Options::changeOption('password_expiry', $options['pwexpiry']);
+        Options::changeOption('force2fa', $options['enforce2fa']);
+        Options::changeOption('requireGameLicense', $options['requirePMC']);
+
+        return true;
+
+    }
+
+}