[1.7.x] Added some missing items to the 1.6.3 release notes.
[1.7.x] Added some missing items to the 1.6.3 release notes.

Backport of c2b269df6e from master

jyotsna1820/django,jyotsna1820/django,oscaro/django,oscaro/django,oscaro/django,jyotsna1820/django,oscaro/django,jyotsna1820/django