MAGETWO-38065: /magento_verion exposes too detailed version information

 - remove other version info from frontend and headers of HTTP requests to external resources

app/code/Magento/Theme/view/frontend/templates/html/bugreport.phtml

@@ -10,5 +10,4 @@
        target="_blank">
         <?php echo __('Report All Bugs') ?>
     </a>
-    <strong><?php echo __('(ver. %1)', \Magento\Framework\AppInterface::VERSION) ?></strong>
 </small>

app/code/Magento/Theme/view/frontend/templates/html/footer.phtml

@@ -12,7 +12,7 @@
         <?php echo $block->getChildHtml() ?>
         <p class="bugs"><?php echo __('Help Us Keep Magento Healthy') ?> - <a
             href="http://www.magentocommerce.com/bug-tracking"
-            target="_blank"><strong><?php echo __('Report All Bugs') ?></strong></a> <?php echo __('(ver. %1)', \Magento\Framework\AppInterface::VERSION) ?>
+            target="_blank"><strong><?php echo __('Report All Bugs') ?></strong></a>
         </p>
         <address><?php echo $block->getCopyright() ?></address>
     </div>

lib/internal/Magento/Framework/Filesystem/Driver/Http.php

@@ -167,8 +167,7 @@ class Http extends File
             'Host: ' .
             $hostname .
             "\r\n" .
-            'User-Agent: Magento ver/' .
-            \Magento\Framework\AppInterface::VERSION .
+            'User-Agent: Magento' .
             "\r\n" .
             'Connection: close' .
             "\r\n" .