Convert Remaining Raster UI Images to Vectors

[dderiso]

I've encountered two issues that I'd like to share:

1. Sometimes sketches won't scale correctly (for unknown and difficult to replicate reasons).
2. When the sketch scaling issue occurs, sketch points are enlarged while sketch lines stay thin, revealing that the sketch point UI glyphs are rasters instead of vectors.

Although (1) is important, I'm writing to you about (2). The UI and viewport mostly use vectors, but some rasters are present, and those raster icons and glyphs can become pixelated or have aliased edges. Replacing all rasters (including the sketch points) with vectors should the experience sharper for both high and low resolution screens.

An example of the issue is shown below: