Flagship issue #1245: hardcode GMT in date / times

[komejo]

What issue(s) does this solve?

• Reformats to GMT offset the prepend 'GMT' when there's a value
• Updates / removes asset injectors as needed

Issue: https://github.com/wri/wriflagship/issues/1245

What is the new behavior?

Moves the fix from asset injector(s) to config/code.

Profile requirements:

• Does deploying this change require a change to config at the site level (choose one)?
  • No config change is required.
  • Yes, and I have written an update hook to apply these config changes.
  • Yes, and I've included updating instructions to be added to the release notes. The next release will need to be a major version increase. (Only do this in special cases.)

Site-level pull requests for testing. Only merge when these PRs are approved:

Create or update any site-level pull requests following the documentation

• Flagship PR: https://github.com/wri/wriflagship/pull/1251

Checked on develop (TA to do)

• Brasil
• China
• Indonesia