ernest/kbin test environments
Hi, new test instances are now available. The previous frontend changes were mostly cosmetic. But now I would like to take a closer look at a few bigger things, like [this](https://codeberg.org/Kbin/kbin-core/pulls/445). However, maintaining compatibility with your styles is very important to me. I also invite you to discuss and... #kbin #webdev #kbinStyles
Implements #433: Add ability to preview uploaded images, clear out images
Wondering if image upload should be moved to main form and not a popup, but here is what the image preview would look like on the current image upload popup. 
minnieo