NoteName__init__ from note name index, and, AsbNote from note name index and alteration value, in progress

Origin/test

See merge request !4

# Conflicts:
#   musenot/chords.py
#   musenot/intervals.py
#   musenot/notes.py

Revert "move indices and tables to the page bottom"

See merge request !3

Revert "Revert "Update docs/source/index.rst""

See merge request !2

This reverts commit 6668c013

Revert "Update docs/source/index.rst"

See merge request !1

This reverts commit 73f48703

This reverts commit d3ba8509