Release notes for 2014.1.13
Point to the correct latest 2014.1.13 release

This is recurring and #12720 is tracking the issue.
Update conf.py as well
Document assigned codenames
Merge pull request #16816 from holmboe/assigned-codenames

Document assigned codenames
Fix weird merge forward in FAQ
Merge pull request #16813 from holmboe/v2014.1.13-relnotes-in-develop

Point to the correct latest 2014.1.13 release
Swap out SaltConf15 sidebar image for one with better scaled fonts