Rapid Interface Builder (RIB) is a browser-based design tool for quickly prototyping and creating the user interface for web applications. Layout your UI by dropping widgets onto a canvas. Run the UI in an interactive "Preview mode". Export the generated HTML and Javascript. It's that simple!
252, #250, #249, #248, #232, #243, #254, #196, #222 included
There are some conflicts between #196 and the button group PR, and some conflicts between #222 and the other PR. I fixed them in the merge commits