Flask-SSLify: fix url standard ports rewrite
- Fixes problem with rewriting secure site url running on standard port where the port number is included in CFG_SITE_URL (e.g. http://localhost:80 -> https://localhost:443).
Signed-off-by: Lars Holm Nielsen <lars.holm.nielsen@cern.ch>
Reviewed-by: Tibor Simko <tibor.simko@cern.ch>