Build a Website

We are developing a block diagram editor in which one has a toolbox from which you can select a block to add in the work area. There is already an existing template that needs to be edited. The template is built on Bootstrap. What is missing: * we need a properties pane * we need a way to connect the blocks from output of one to input of another. We seek developing a long term relation with the developer who will be accepted because we have further work to do. If you have read the post, please write the word 'purple' in your bid.