**When Shift + Enter is pressed on side-bar a

e.preventDefault && play first video in main-landing-container (if one exists)

add a data-video-img attribute to sidebar and steps, step-float etc, Change tutorial link img if they are clicked, return to Module icon if no video exists

For the love og, fix, focus to main-landing-container, mainTargetDiv, (whereever it's going)

Problem is in lastClickedSidebar item, only focus to main-landing-container when same side-bar a is clicked twice in a row, if focus leaves, lastClicked is removed