Adding the ability to make two equal sized datasets in one row of a profile

[JPReceveur]

In building profiles, it would be good to have the option to have two equal width profiles on the same line. Having two 'one-dataset' width ends up with empty space and having two different sized windows can make interpreting UMAPs on the same line an issue.

[adkinsrs]

I am assigning @jorvis as the dataset manager is his domain. It is worth noting that in the database, we can set a display to have width 6 (out of 12) and it will allow for two equal-sized displays on one line. This is currently the default (I believe) for multigene curations