Dynamic paint tools use potentially overlapping IDs

[luxaritas]

See

EternaJS/src/eterna/ui/toolbar/Toolbar.ts

Line 612 in a1dc9d1

private setupDynamicPaintTools() {

Here's an example of what could happen: Puzzle 1 has a single paint tool, "stamper", Puzzle 2 has a single paint tool, "randomizer". Adding or removing one from the toolbar will automatically add/remove the other when opening the other puzzle, because both of them have an ID of DYNAMIC-1. This is probably unintended. Instead, we should probably use the script ID.