UI Improvements

[ma7dev]

As we are almost done merging dev/move_to_jekyll branch to main based on this issue #19, we will have a new issue and branch for UI improvements. The improvements would be involving the following items:

• #44
• #46
• #47

Based on Mishari's suggestions

• Add a simple filtering functionality for #17

[ma7dev]

After our meeting, we have decided the following things:

• @unifoliatus - layout's design + landing page's header
• @Mosaibah - landing page
• @alonemazin - filtration page

[ma7dev]

Waiting for #75.