Store tweaks ideas

[novoselt]

Some maybe due to a personal preference, but maybe some preferences are more "widespread":

1. Change "Expert configuration" to "Customize".
2. Get rid of the bottom buttons that repeat the header.
3. Do not hide "the bottom explanations", show them at once for all options.
4. If possible, make panels to be of the same size always and make "subsections" align with each other as well.
5. Consider only increasing parameters from left to right, I dislike the decrease from 15 GB to 10 GB disk, especially since it costs almost nothing compared to the last preset overall price.
6. Increase from 8 GB to 10 GB looks strange. I got that 16 GB is not a good idea, but maybe 12 GB is possible? Then we go 4 -> 8 -> 12. Also if 16 GB is not a good idea, we should not sell it at all...
7. There is a footnote for "Run 10-20 Jupyter Notebooks at once¹" in the middle tab, but exactly the same footnote applies to all such comments, I would make it a global one and maybe just visible on hover.
8. On the "Customize" page there are yellow banners suggesting using a compute server - they should NOT mention dedicated virtual machines!
9. But they can appear for maxed out disk and "Always running" timeout.
10. This is a serious revamp, but: how about we get rid of the top "summary with Add to Cart"? I find it strange to have it right away before even deciding on Business/Academic...
11. Even further - I would prefer to have a "side box" showing current configuration/price, while there is no bottom summary and no sticky banner at the very top. Ideally there should be nothing to scroll on a sensible screen - just make a few choices (as few as possible!), see the resulting price, and buy it!
12. To complete the dozen: have two buttons "Add to Cart" and "Buy Now" that shortcuts to the checkout, most of the time people are buying a single license/subscription, no need for extra steps with the cart.