Fixed tile resizing. Resizing the tiles used to zoom the whole grid, which could push it off its panel and overlap other things. Now it re-flows instead: making tiles bigger just fits fewer per page, making them smaller fits more, and the grid always stays inside the character-select frame dynamically.
Note: this only works on screenpacks that draw their grid slots dynamically. If a screenpack has the slots baked into its character-select background image, those slots can't move or resize - so tile resizing turns itself off automatically on those packs (the grid still displays fine at its normal size).