New mutators + search bar

[VirxEC]

There are so many mutators now that I notice myself not knowing where the thing I want is - so I added a search bar and increased the maximum number of columns to 5 as well as the minimum number of columns to 2.

[NicEastvillage]

I like the search functionality. That's gonna help a lot!
We could also consider grouping them under headers. In Rocket League, there are three columns: "Match", "Game", and "Ball". These groups aren't ideal, and we have many hidden mutators to consider too, but they're a starting point.

I just tried to make my own groups and ended up with the following: Car/Controls, Ball, Game modes, Scoring, and Match. The mutators are actually pretty evenly spread like this. I am not quite sure what some of the new mutators do, but they sound like they go in the Game Mode-altering group.

[NicEastvillage]

I'm not happy with how the modal resizes when you search. Could we make it size static?

[VirxEC]

Could we make it size static?

Err, that would probably involve hard-coding a fixed width/height... imo the resizing modal really isn't that bad, and it keeps the search results in the center of the screen and not off to a corner.

[VirxEC]

I thought it was odd at first too, but then I got used to it and I kinda like it