[#33392] Repeatable form fields fix (2)

What here:
- complete rewritten script
- fixed multiple instances on the one page
- fixed rows duplication
- fixed some fields that stopped work right, after duplication
- fixed "to big modal" - added scroll
- each new row will be added after the row where the button "add" was clicked, as  alternative for "sortable" :wink: 

Links:
- [[#33392] Repeatable form fields fix](http://joomlacode.org/gf/project/joomla/tracker/?action=TrackerItemEdit&tracker_item_id=33392&start=0), maybe some other already exist to 
- related on github, that I found #3192 #3564 #3573 #3214

XML that I use for testing:
```xml
<field name="test" type="repeatable" icon="list"
		label="Test" description="Test descr"
		default=""
		maximum="5">
	<fieldset hidden="true" repeat="true">
		<field name="test_color" type="color" default="#eee"
	        label="color"  description="test_color" />

	   <field name="test_tag" type="tag"
	   		label="JTAG" description="test_tag" mode="nested"
	   		multiple="true" />

		<field name="test_list" type="list" default="1"
			label="test_list" description="test_list" >
			<option value="1">JYES</option>
			<option value="0">JNO</option>
		</field>

		<field name="test_text" type="text"
			label="test_text" description="test_text" />

		<field name="test_textarea" type="textarea"
			label="textarea"  width="100" />

		<field name="test_radio" default="0" type="radio"
			label="test_radio" description="test_radio">
			<option value="1">JYES</option>
			<option value="0">JNO</option>
		</field>

		<field name="test_checkbox1" type="checkbox"
			label="checkbox1" description="test_checkbox1"  />

		<field name="test_checkboxes" type="checkboxes"
			label="checkboxes" description="test_checkboxes" >
		    <option value="a">A</option>
		    <option value="b">B</option>
		    <option value="c">C</option>
            <option value="d">D</option>
		</field>

		<field name="test_media" type="media" directory=""
			label="media" description="test_media"/>

    </fieldset>
</field>

```
And of course can be used existing, if someone already have.

Who brave enough to make a test? :smirk: