and more tidying up and grammar etc

also bring in about half the options

curtesy of
https://www.iconfinder.com/icons/

Original here:
https://wiki.civicrm.org/confluence/display/CRMDOC/Create+a+Module+Extension

still missing some macro content! :-/

The most canonical form is to present entities in camel-case and and to
present actions in lower-case.  This matches the API explorer.

Removing "Other sources of information" section from home page because that content is now in "Developer Community" page

This completes transfer of

https://wiki.civicrm.org/confluence/display/CRMDOC/Create+an+Extension

This page is yet to do:

https://wiki.civicrm.org/confluence/display/CRMDOC/Create+a+Module+Extension

defining "ATX style headers" vs "setext style headers" here since it has been a topic of conversation

https://wiki.civicrm.org/confluence/display/CRMDOC/The+developer+community

perl -0777 -i -pe 's|^(.*)\n-{3,}$|## $1|gm' `find . -name '*.md'`
perl -0777 -i -pe 's|^(.*)\n={3,}$|# $1|gm' `find . -name '*.md'`