FIX setcookie when a custom http port is used
Use case without this patch:
- Install Storytlr from http://storytlr.loc:8080/
- Try to login with the same url
- No error displayed
=> It's not possible to set a cookie with a port number in the cookie domain

Patch:
- Use parse_url PHP function
- Check if there is a custom http port
- if true: just get the host and let the port behind
- if false: return the initial string
Merge pull request #83 from Simounet/fix_host-custom-port-setcookie

FIX setcookie when a custom http port is used