Split and Organise documentation files (#404)

* Set global TOC collapse to false

* Split documentation

I tried to split the index.md file into logical parts, not changing the contents.
I did add a space and change one HTTP URL to HTTPS.

---------

Co-authored-by: Sean Whalen <44679+seanthegeek@users.noreply.github.com>

docs/source/conf.py

@@ -83,6 +83,10 @@ exclude_patterns = []
 #
 html_theme = 'sphinx_rtd_theme'
 
+html_theme_options = {
+    'globaltoc_collapse': False
+}
+
 # Add any paths that contain custom static files (such as style sheets) here,
 # relative to this directory. They are copied after the builtin static files,
 # so a file named "default.css" will overwrite the builtin "default.css".