Add @a2lix/symfony-collection solution

Author: webda2l

form/form_collections.rst

@@ -619,7 +619,7 @@ Template Modifications
 
 The ``allow_delete`` option means that if an item of a collection
 isn't sent on submission, the related data is removed from the collection
-on the server. In order for this to work in an HTML form, you must remove 
+on the server. In order for this to work in an HTML form, you must remove
 the DOM element for the collection item to be removed, before submitting
 the form.
 
@@ -747,13 +747,17 @@ the relationship between the removed ``Tag`` and ``Task`` object.
     updated (whether you're adding new tags or removing existing tags) on
     each Tag object itself.
 
-.. sidebar:: Form collection jQuery plugin
+.. sidebar:: Form collection external solutions
 
-    The jQuery plugin  `symfony-collection`_ helps with ``collection`` form elements,
-    by providing the JavaScript functionality needed to add, edit and delete
-    elements of the collection. More advanced functionality like moving or duplicating
-    an element in the collection and customizing the buttons is also possible.
+    The package `@a2lix/symfony-collection`_ helps with ``collection`` form elements,
+    by providing to modern browsers the Javascript functionality needed to add, edit and delete
+    elements of the collection.
+
+    If you want to use jQuery, there is a jQuery extension, `symfony-collection`_ with
+    more advanced functionality like moving or duplicating an element in the collection
+    and customizing the buttons is also possible.
 
 .. _`Owning Side and Inverse Side`: http://docs.doctrine-project.org/en/latest/reference/unitofwork-associations.html
 .. _`JSFiddle`: http://jsfiddle.net/847Kf/4/
+.. _`@a2lix/symfony-collection`: https://github.com/a2lix/symfony-collection
 .. _`symfony-collection`: https://github.com/ninsuo/symfony-collection