FIX: WaterRipplesSystem import + grass_placeholder

- ADDED: WaterRipplesSystem.js and WaterPhysicsSystem.js to index.html
- FIXED: grass_placeholder.png (was 0 bytes, now 685K)
- FIXED: Transparency wipe on DEMO/Faza1/Faza2 assets
- STATUS: Clean console ready

novafarma.tiled-session

@@ -3,7 +3,7 @@
         "height": 4300,
         "width": 2
     },
-    "activeFile": "assets/tiled/probna farma numero uno .tmx",
+    "activeFile": "",
     "expandedProjectPaths": [
         "assets/maps"
     ],
@@ -351,7 +351,6 @@
     "map.layerDataFormat": "3",
     "map.width": 80,
     "openFiles": [
-        "assets/tiled/probna farma numero uno .tmx"
     ],
     "project": "novafarma.tiled-project",
     "recentFiles": [