Support for alternate behavior of $_SERVER['HTTPS'] variable

[GoogleCodeExporter]

What steps will reproduce the problem?
http://www.eathena.ws/board/index.php?showtopic=275756
1. setup FluxCP on IIS, Abyss Web Server, or any web server 
where $_SERVER['HTTPS'] = "off"
if HTTPS is disabled (on Apache, $_SERVER['HTTPS'] is empty)
2. do some action that makes FluxCP send an email, like registration email 
confirmation or password reset

What is the expected output? What do you see instead?
--> The URL in the email starts with HTTPS, even if you triggered the email 
sending over HTTP.

Please provide any additional information below.
reece explains the issue in this eAthena forum topic: 
http://www.eathena.ws/board/index.php?showtopic=275756

Original issue reported on code.google.com by brianluau on 12 Jul 2011 at 4:27

[GoogleCodeExporter]

Fixed in r1074.

Original comment by Paradox924X on 6 Feb 2012 at 12:40

• Changed title: Support for alternate behavior of $_SERVER['HTTPS'] variable
• Changed state: Fixed
• Added labels: Usability