Fix performance bottlenecks

[saul]

There is a significant performance issue when performing SQL queries with a large number of results.

Although the query itself takes only 500ms, it takes JS 5 seconds.

I believe there are also additional performance issues with adding many thousands of elements to an array of objects. Vue.js is trying to observe them all when it's not necessary.

[saul]

Suggest moving from 2D canvas to using Three.js for improved performance courtesy of WebGL. We will be able to offload more of the rendering to the GPU, which is always good.