UI/UX: Display Optimal clusters

[kaushik12]

Optimal clusters for the chosen data are computed internally but not yet displayed in the UI. Modifying the slider seems a bit hard. Need to explore alternative solutions.

Needs:
Display optimal number of clusters (4 options for different ranges [0-50; 50-100; 100-150; 150-200]
Allow user to click on these to automatically set number of clusters and recompute

Ideal Solution:
Display little pointers above/below slider that a user can click on to set the slider val to the corresponding value.