Think about ways of better interacting with the allele menu

[armish]

Currently, it is a bit hard to navigate the huge select box and also a bit hard for the eye to distinguish two items from each other.

One quick solution to this would be to add pseudo-headers (disabled <option>s with custom styling to them) to make them look nicer: https://codepen.io/armish/pen/MowQPB

And another one is to implement a quick autocomplete (e.g. via jquery-chosen) to allow user quickly filter and select from the list: https://codepen.io/armish/pen/mwJXgr/