Added a first zoom plate

Works great, let's make the code cleaner and use it everywhere

src/utils/pictureZoom.js

@@ -0,0 +1,11 @@
+import $ from 'jquery';
+
+//Show picture :
+export function showPicture(link){
+  $("#picture_zoom img").attr("src", link);
+  $("#picture_zoom").fadeIn(400);
+}
+//Hide picture :
+export function hidePicture(){
+  $("#picture_zoom").fadeOut(400);
+}