Allow submitting Gitlab URLs to user profile

[robozman]

Currently the user profile only officially supports adding Github urls. Technically I can enter in a Gitlab url here but it would be cool if the icon next to the box was updated to reflect the service I'm using.

[csrs]

Here is my idea: change the GitHub icon to a generic git icon, so that GitHub, GitLab, Bitbucket are all equal options and the code or UI doesn't need another if/else logic or text box to do things differently depending on what is entered. @robozman what do you think?

[robozman]

I like that idea! Thanks for your help on this!