[BUGFIX] GetFeatureInfo with layer's title

Since QGIS 2.6, When querying GetFeatureInfo with text/xml format, the
 layer's name can be the layer's title.

Author: rldhont

lizmap/modules/lizmap/classes/lizmapProject.class.php

@@ -170,6 +170,22 @@ public function getOptions(){
     public function getLayers(){
       return $this->cfg->layers;
     }
+    
+    public function findLayerByName( $name ){
+      if ( property_exists($this->cfg->layers, $name ) )
+        return $this->cfg->layers->$name;
+      return null;
+    }
+    
+    public function findLayerByTitle( $title ){
+      foreach ( $this->cfg->layers as $layer ) {
+          if ( !property_exists( $layer, 'title' ) )
+            continue;
+          if ( $layer->title == $title )
+            return $layer;
+      }
+      return null;
+    }
 
     public function hasLocateByLayer(){
       if ( property_exists($this->cfg,'locateByLayer') ){

lizmap/modules/lizmap/controllers/service.classic.php

@@ -469,11 +469,17 @@ function getFeatureInfoHtml($params, $xmldata){
 
     foreach($xml->Layer as $layer){
       $layername = $layer['name'];
+      $configLayer = $this->project->findLayerByName( $layername );
+      // since 2.6 layer's name can be layer's title
+      if ( $configLayer == null )
+        $configLayer = $this->project->findLayerByTitle( $layername );
+      if ( $configLayer == null )
+        continue;
 
       // Avoid layer if no popup asked by the user for it
       // or if no popup property
-      if(property_exists($configLayers->$layername, 'popup')){
-        if($configLayers->$layername->popup != 'True'){
+      if(property_exists($configLayer, 'popup')){
+        if($configLayer->popup != 'True'){
           continue;
         }
       }
@@ -482,13 +488,13 @@ function getFeatureInfoHtml($params, $xmldata){
       }
 
       // Get layer title
-      $layerTitle = $configLayers->$layername->title;
+      $layerTitle = $configLayer->title;
 
       // Get the template for the popup content
       $templateConfigured = False;
-      if(property_exists($configLayers->$layername, 'popupTemplate')){
+      if(property_exists($configLayer, 'popupTemplate')){
         // Get template content
-        $popupTemplate = (string)trim($configLayers->$layername->popupTemplate);
+        $popupTemplate = (string)trim($configLayer->popupTemplate);
         // Use it if not empty
         if(!empty($popupTemplate)){
           $templateConfigured = True;