Move admin/features to src/Module

- Add Module\Admin\Features class
- Add route for admin/features
- Add features admin aside menu entry
- Move templates/admin/settings_features.tpl to templates/admin/features.tpl
- Remove admin_page_features and admin_page_features_post from mod/admin.php

src/Module/Admin/Features.php

@@ -0,0 +1,79 @@
+<?php
+
+namespace Friendica\Module\Admin;
+
+use Friendica\Content\Feature;
+use Friendica\Core\Config;
+use Friendica\Core\L10n;
+use Friendica\Core\Logger;
+use Friendica\Core\Renderer;
+use Friendica\Module\BaseAdminModule;
+
+class Features extends BaseAdminModule
+{
+	public static function post()
+	{
+		parent::post();
+
+		parent::checkFormSecurityTokenRedirectOnError('/admin/features', 'admin_manage_features');
+
+		$features = Feature::get(false);
+
+		foreach ($features as $fname => $fdata) {
+			foreach (array_slice($fdata, 1) as $f) {
+				$feature = $f[0];
+				$feature_state = 'feature_' . $feature;
+				$featurelock = 'featurelock_' . $feature;
+
+				if (!empty($_POST[$feature_state])) {
+					$val = intval($_POST[$feature_state]);
+				} else {
+					$val = 0;
+				}
+				Config::set('feature', $feature, $val);
+
+				if (!empty($_POST[$featurelock])) {
+					Config::set('feature_lock', $feature, $val);
+				} else {
+					Config::delete('feature_lock', $feature);
+				}
+			}
+		}
+
+		self::getApp()->internalRedirect('admin/features');
+	}
+
+	public static function content()
+	{
+		parent::content();
+
+		$a = self::getApp();
+
+		if (($a->argc > 1) && ($a->getArgumentValue(1) === 'features')) {
+			$arr = [];
+			$features = Feature::get(false);
+
+			foreach ($features as $fname => $fdata) {
+				$arr[$fname] = [];
+				$arr[$fname][0] = $fdata[0];
+				foreach (array_slice($fdata, 1) as $f) {
+					$set = Config::get('feature', $f[0], $f[3]);
+					$arr[$fname][1][] = [
+						['feature_' . $f[0], $f[1], $set, $f[2], [L10n::t('Off'), L10n::t('On')]],
+						['featurelock_' . $f[0], L10n::t('Lock feature %s', $f[1]), (($f[4] !== false) ? "1" : ''), '', [L10n::t('Off'), L10n::t('On')]]
+					];
+				}
+			}
+
+			$tpl = Renderer::getMarkupTemplate('admin/features.tpl');
+			$o = Renderer::replaceMacros($tpl, [
+				'$form_security_token' => parent::getFormSecurityToken("admin_manage_features"),
+				'$title' => L10n::t('Manage Additional Features'),
+				'$features' => $arr,
+				'$submit' => L10n::t('Save Settings'),
+			]);
+
+			return $o;
+		}
+	}
+}