Enhancement Bug Description Page: Create GitHub issue added

[CodeWithBishal]

Part 1

With this commit, The header widget of the issue page is matched with our final UI design

Part 2

If the GitHub issue URL of an Issue is null, the user who created the issue and superuser will get a button to create a GitHub issue.

Upon Clicking on the button the page will hit a request to a BLT API endpoint and create a GitHub issue using GitHub REST API.

The BLT API endpoint I created has several security features,

• No user can directly open the url - to prevent misuse of the API
• It will check if GitHub URL for that already exists before creating a new issue
• It will check if the user is logged in
• It will check if the same user who raised the issue is trying to create the GitHub issue or if it is a superuser

Part 3

I will continue working on the design aspect of this page to match with our final design layout

[DonnieBLT]

A few tweaks

[DonnieBLT]

Please remove the Django comments from the html. I find them confusing. I don't think html needs comments. If you need comments then please use html comments, but id prefer no comments if you are ok with it.