follow-up to #48 finish aligning variable names w/ architecture

- rename fragmentsdir to partialsdir
- rename fragment family to partial
- rename samplesdir to examplesdir
- rename sample family to example
- rename vfileCatalog to catalog
- rename vfiles to files
4 jobs for master in 3 minutes and 28 seconds (queued for 8 seconds)
Status Job ID Name Coverage
  Setup
passed #43283289
yarn

00:02:25

 
  Verify
passed #43283292
commitlint

00:00:45

passed #43283290
lint

00:00:47

passed #43283291
test

00:01:02