php index setting fix

fixes #28

public/assets/js/app.js

@@ -327,6 +327,9 @@
 					$scope.data.index = 'index.html';
 					$scope.data.fallback_html = true;
 					break;
+				case 'backend':
+					$scope.data.index = 'index.php';
+					break;
 				case 'spa':
 					$scope.data.index = 'index.html';
 					$scope.data.fallback_html = true;
@@ -518,7 +521,6 @@
 
 			if (!$scope.data.php) {
 				$scope.defaultData.index = 'index.html';
-				$scope.data.index = 'index.html';
 			} else {
 				$scope.defaultData.index = 'index.php';
 			}

public/index.html

@@ -437,7 +437,7 @@
 								</div>
 							</div>
 							<div class="tab-pane tab-routing" ng-class="{ 'active': tab === 'routing' }">
-								<fieldset class="form-group">
+								<fieldset class="form-group" ng-if="isPHP()">
 									<div class="row">
 										<legend class="col-sm-3 col-form-label col-form-label-sm">
 											<code tooltips tooltip-template="Defines the file that will be used as an index.">index</code>