* Cleaned up some broken links and updated few links and provided new books list

* cleaned up broken links and added new and updated links

* Modified and added new links

* delete an editor file

* we don't permit shortened links

* replace AngularJS channel links

* fix spacing, add title from resource

* remove duplicate

* moved "software engineering" courses to java and RoR

* attribution, title from resource

* alphabetize
Co-authored-by: NEric Hellman <eric@hellman.net>