Make purpose of primary email much more explicit

Author: n0toose

options/locale/locale_en-US.ini

@@ -691,7 +691,7 @@ emails = Email Addresses
 manage_emails = Manage Email Addresses
 manage_themes = Select default theme
 manage_openid = Manage OpenID Addresses
-email_desc = Your primary email address will be used for notifications, password recovery and Git operations made using the web interface.
+email_desc = Your primary email address will be used for notifications, password recovery and, provided that it is not hidden, web-based Git operations.
 theme_desc = This will be your default theme across the site.
 primary = Primary
 activated = Activated