2D graphic support, maybe like d3

[amitu]

We can not use D3 directly, as it works on low level dom, where as we expose higher level kernel elements, and have our own dom tree, which is not accessible to JS as such.

We can take inspiration from the library tho, and create our own abstractions after learning from them.

Next step would be to familiarise ourselves with D3 capabilities, and start thinking how can we map it to ftd.