jaseci-website-v0.2.12: Modify landing page (#50)

* Changed main text font, modified top navbar and implemented animations when scrolling to relevent sections.

* Again changed little bit of appearence of main text and image.

* Added some comments

* Main text font made tight and Changed some comments

* Changed scroll bar showing in comparison of Jac and Traditional programming.

* changed bit of appearance of in that compairing jac and traditional programming.

* Byllm blog images restored