[#897] Report: favicon not showing on github pages

[Tejas2805]

Fixes #897

Modern browsers automatically try to load the favicon from the root of
the website.

However, for GitHub pages, our favicon is not located in the root but in
another path.

Let's explicitly add a link to our favicon resource so that it gets
displayed. 

[yong24s]

@Tejas2805
You want to change your commit message so that this PR directly address #897?

[Tejas2805]

@yong24s I came across the PR #612 last night and saw that icon wasn't added though it said that it did, so worked on it from that POV. Didn't see your issue. Do you think I should close the PR, so that the first-timers can still have a try at this?

[yong24s]

@Tejas2805

Since you already worked on it, it's fine (also its fine by me if you worked on a few first timer issues, when you are starting out). You can help to dogfood and create more first timer issues :).

[yong24s]

@Tejas2805

#612 did add the favicon but it didn't work when the favicon is not in the root url.
Read #897 and write a commit message that addresses to it.

I already tested your patch and it fixes the issue.