Changelog update for Sprint 14

@Fryguy what I’ve been able to do so far on the changelog.md for sprint
14
Changed can link to the same section as Added: `[Changed](https://github.com/ManageIQ/manageiq/issues?q=milestone%3A%22Sprint+14+Ending+Oct+20%2C+2014%22+is%3Aclosed+label%3Aenhancement)`