Dev Docs: Add "Edit|History|Report Issue|Discuss" Links To Subheads
Improve styles for actions in devel-docs
Apply consistent title and paragraph margins
Increase space between titles and actions for better readability
Use a different font-size for actions to separate them from the content
Dev Docs: Move Manual Sourcefile Lines To Auto Helper (thanks saivann!)
Adjust pageoffset to update the "Edit On GitHub" link slightly before the user scrolls the relevant subsection
Merge pull #682: Dev Docs: Add "Edit|History|Report Issue|Discuss" Links To Subheads