Clean up topics on DITA 1.2 and DITA 1.3#172

Merged

infotexture merged 2 commits intodita-ot:developfrom robander:dita13

Oct 19, 2017

+166-158

Commits on Oct 19, 2017

Clean up DITA 1.2 and 1.3 spec topics
Robert D Anderson
committed
Move external links to keys
Robert D Anderson
committed