opencart/opencart — pull request #1976 by martinille (2014-10-11 07:37:58+00:00)
Title: better specified extensions in Extension Installer

Before:
$_['help_upload'] = 'Requires a Zip or XML modification file.';

Now:
$_['help_upload'] = 'Requires a modification file with extension ".ocmod.zip" or ".ocmod.xml".';