RainbowList Updates

[silvercat17]

As mentioned before, I've been doing some tweaking.

• Accomplishments is now called Masterpieces. I'm pretty sure I've updated it everywhere and when linked in a sidebar it says "masterpieces (challenges)".
• Several of the Masterpieces were updated
• the header image for Masterpieces has been updated
• there were a few images on Supplies that kept not showing up because they were still on ibb images. So Fingerpainting and Interactive Art's images have been updated.
• there was a question about Embroidery so I've added some q&as for it
• the generic banner for 10 threads has been added
• I added a second site for Chalk since Wired has a limited number of free articles
• the Rules, Supplies, Styles, and Palettes have been proofread and where necessary edited.
• The rules were added to the RainbowLists sidebar
• A few more q&a were added to Styles
• The new auto tracking sheet post is linked to on Masterpieces