Display metadata on file page

Signed-off-by: Justin Georgi <justin.georgi@gmail.com>

i18n/en.json

@@ -2,5 +2,6 @@
     "exif-glmv-meshes": "Number of meshes",
     "exif-glmv-textures": "Number of textures",
     "exif-glmv-version": "GLTF version",
-    "exif-glmv-generator": "Model generator"
+    "exif-glmv-generator": "Model generator",
+    "exif-glmv-metadata": "GLMV metadata version"
 }

includes/GlModelHandler.php

@@ -198,7 +198,7 @@ class GlModelHandler extends ImageHandler {
         }
         $newMeta['glmv-metadata'] = self::GLMV_VERSION;
         $metaHandler = new BitmapMetadataHandler;
-        $metaHandler->addMetadata($newMeta,'exif');
+        $metaHandler->addMetadata($newMeta,'native');
         return array(
             'width' => 600,
             'height' => 800,
@@ -226,6 +226,26 @@ class GlModelHandler extends ImageHandler {
     }
 
 	/**
+     * Get an array structure that the UI will format this into a table where the visible
+     * fields are always visible, and the collapsed fields are optionally visible.
+     * 
+     * The function should return false if there is no metadata to display.
+     * 
+	 * @param File $image
+	 * @param bool|IContextSource $context Context to use (optional)
+	 * @return bool|array
+	 */
+    public function formatMetadata( $image, $context = false ) {
+		$glmvMetadata = $image->getMetadataArray();
+
+		if (!count( $glmvMetadata ) ) {
+			return false;
+		} else {
+            return $this->formatMetadataHelper( $glmvMetadata, $context );
+        }
+	}
+
+    /**
      * Small helper function to display information on the browser console
      * 
      * Usage: