Add left and right arrows to home.html for slide on click
Fix bug in home.js for arrow click sliding, also shange arrow fill and stroke color
Adjust margins for arrows in home.html
Add change opacity on arrow hover in hom.css
Modify home.html.erb for small resolution < 795px
Adjust home.html.erb page for mobile
Add image tag of home_smal_pic.png to preload div
Remove justify text in about page