More vue updates

[RoelN]

• [x] Use proper ID to scrollTo
• [x] Consistently name modal events (as mentioned here by @danieldiekmeier)
• [x] Avoid recursive updates (possible suspect: $filters)

[RoelN]

Have to stop now, but two more things to investigate:

1. The select in FeatureControls
2. Something in OpenTypeFeatures

These are making Vue hang. Probably I'm triggering these recursive updates because I'm a doofus.