Version 7.0.7

For more info on the 7.0 release, please read the 7.0.0 release notes.

Fixed a bug that would cause an error message regarding the Footer and that it cannot be serialized for Atlassian cache.
Ensured proper CDN support for static font resources for Data Center instances. Read more on setting up a CDN here: https://confluence.atlassian.com/doc/configure-your-cdn-for-confluence-data-center-976771362.html
Ensured Promise polyfills are isolated to the app to avoid conflicting with other apps.
Fixes issue with Activitystream popup rendering double titles