Worq through examples

Work through examples:

[World map issues](https://bitbucket.org/atlassian/forge-issue-countries/src/master/)

[Translate issue descriptiion](https://bitbucket.org/atlassian/forge-issue-translation/src/master/)

[Ui modification](https://bitbucket.org/atlassian/forge-ui-modifications-example/src/master/)

[Tunnel custom UI](https://developer.atlassian.com/platform/forge/build-a-custom-ui-app-in-jira/)

[Jira issue trigger](https://developer.atlassian.com/platform/forge/automate-jira-using-triggers/)

[Promote 2 production](https://developer.atlassian.com/platform/forge/staging-and-production-apps/)