Add new results display feature

[RohanK22]

This feature adds another option to ARTwarp under the "Analyze Menu Tab" which allows users to plot categorization results in a different way. The current results display plots all of the reference contours and the contours under them all on one page making it look a bit cluttered and hard to compare contours within a category.

The new results display displays one category at a time. It shows you which reference contour/category that is currently selected (blue text) and plots all the contours under that category in a new panel. It allows you to switch between different categories by clicking any of the reference contours on the top panel.

Limitations that can be improved on:

• There is no scrolling or pagination involved so it can at max display 20-25 whistle contours under one category. This might be easier to do if we upgrade from figure-based apps to UI-figure-based apps on MATLAB.
• The UI can be imporved. Right now all the sizing is set to relative sizing. When there are more than 30 contour categories the panel on the top (showing all the reference contours) will get cluttered. There is a small overlap between the panel containing the reference contours and the panel below it sometimes.

Attempts to resolve #14

[douggillespie]

All looks sensible and I'm trusting that it all works, so am going to merge.