Use separate member files

[stp-ip]

Is this a BUG REPORT or FEATURE REQUEST?:
feature

What happened:
Currently all member data is stored in one file.

What you expected to happen:
Possibility to split up each member into their own file.

How to reproduce it (as minimally and precisely as possible):
Try adding members as their own file.

Anything else we need to know?:
Some ideas on structure.
Maybe the easiest is to reuse the fragment file name as sub path.
So when a fragment is called 1-hero.md the sub path for any fragment specifics is 1-hero/

For simple pages this could be simple as:

content/index.md
content/1-hero.md
content/1-hero/some-image.jpg
content/2-team.md
content/2-team/1-gopher.md

For more complex scenarios:

content/index.md
content/1-team.md
content/1-team/1-gopher.md
content/2-advisors.md
content/2-advisors/1-tiny-gopher.md