Prefer curl over file_get_contents
changed distances
Update AdminTab.php

Use Tools::getValue() instead $_POST / $_GET
Update pe.xml

it had the wrong tax%
// norms
[-] BO : fixed bug while use filter with enter key

If you use filter with enter key in customer or some admin pages.
And there is first img tag has onclick event like this getE('submitFiltercustomer').value=2 in form tag, that onclick event is fired. Because of that you will move 2nd page with blank result.
This is bug with some browser. It can be prevented with e.preventDefault() function.
Update list_header.tpl

The ajax position ordered system can be used with simple_header = true.
Update defines.inc.php
[+] PDF : Added product images
[*] BO : Allow price on Attribute Generator to be negative, to set it to impact decrease
Update list_content.tpl

Inutil & bad ending condition {if}
[*]FO Unsets the etag for smaller request.
Enable PDFTemplates translation for Modules
[FO]:Theme Serves no prupose

I cannot see why that is in there.
Add arguments to get expected modules translations
[*] BO : Firstname before Lastname in customerlist

It's for consistency. Address and order have it this way
If accepted Employer list can be changed to.
[-] CORE : fixing an error with non-multilang ObjectModel instance
[-] CORE : actionUpdateQuantity should be called after cache is cleared

If you are using StockAvailable::getQuantityAvailableByProduct into actionUpdateQuantity hook, results are not "fresh" for the current edited product.
Even if the quantity is real into hook parameters, it may be nice that StockAvailable::getQuantityAvailableByProduct return the fresh result into this hook.
There may be others methods into StockAvailable class that should also work like this
Force webservice rewrite to "api/" with the slash

The "?" after ^api/ makes the slash optional (? = 0 or 1 time for the last group or char). If we use a friendly url which begins with api, the visitor gets redirected to the webservice, and never gets the page. Try it for example with  the friendly url "apiculture" (beekeeping :-) ).
html5 update