Automate language pack export for deployment script

Deployment script is a real time saver when it comes to deploying an update to dev/live servers.

However it still requires user actions in terms of exporting latest language pack and comparing it to one we have right now.

Right now I'm doing this (see below) to export language pack for each task:
click on "Regional" section in Admin Console
select English language
click on Export toolbar button
enter language pack filename
click on "Select None" to uncheck all modules
click on "Custom" to select module which I want to export
click on Export button on toolbar
These are horrible 7 clicks I need to make just to have "Custom" module's language pack being exported.

I'm proposing to perform an export of all language packs from modules, that have "project_upgrades.sql" file when "Synchronize" button is pressed in "System Tools" section.

As a result we'll have a separate language pack for every module, that is used by deployment script.