- use default avatar image if person image is not set
- add thumbnail and medium default avatar
images
- set default avatar images directly in public/media folder
- remove public/media's root
folder from .gitignore
- remove unnecessary copy:images script and cpy-cli package

closes #125

- replace rollup config with vitejs
- use vite dev server during development to take advantage of
hot module replacement (HMR)
- add vite service using Vite library to load css and js assets
- update package.json scripts and remove unnecessary
dependencies
- update scripts/bundle-prepare.sh

closes #107