Complete basic bookmarks site which accepts name/url/category and displa...

Requires a database called bookmarks. Has a bookmarks.sql file to seed said database:

```
createdb bookmarks
psql -d bookmarks -f bookmarks.sql
```

Looks best with width > 1000px. Gets a bit janky below that because CSS.

Bookmarks must be added with full URL; category is optional and entries that do not supply it will be listed as uncategorized.