url shortener always change host url to localhost

User Impact:

User is not able to use short version of url in case when he/she wants to share some dashboard - long version is proper short one always change hostname address to "localhost"

Steps to Reproduce:
#1 select some dashboard to share
#2 click on share btn 
#3 select toggle for short url 

Actual Result:

go to this url it will point to non existing page

Expected Result:

even do the url is shorted it should be still valid url

Findings:

The shortened URL is based on .ini file's domain value. If it's defined as "localhost" (the default in PMM), the URL will follow.

Solution

Check if the .ini file has localhost as domain and if the current domain is different. If so, show a warning telling users that the short URL might point to the wrong location and explain why.