if there is no github link in the project, it should not display the github button

[reactVishnu]

Step to Reproduce:
1.) Start the dev server by npm start.
2.) Edit your project in the code and dont provide any link in ghLink.
3.) Go to the website
4.) In project section you can see still see the github button.

Scenario:
If a user works in a corporate projects like me, so there will be no github or bitbucket links and most of them were confidential, so attaching the github link is not possible.