Fix replaceSupportEmail function

[magicznyleszek]

Checklist

1. If you've added code that should be tested, add tests
2. If you've changed APIs, update (or create!) the documentation
3. Ensure the tests pass
4. Make sure that your code lints and that you've followed our coding style
5. Write a title and, if necessary, a description of your work suitable for publishing in our release notes
6. Mention any related issues in this repository (as #ISSUE) and in other repositories (as kobotoolbox/other#ISSUE)
7. Open an issue in the docs if there are UI/UX changes

Description

Makes the constanse setting SUPPORT_EMAIL being displayed in error notifications.

Notes

Changes here:

• Had to move some things around to avoid circular dependency errors:
  • handleApiFail from js/utils to js/api
  • some text related functions were moved from js/utils to js/textUtils, because replaceSupportEmail requires envStore, and importing it into js/utils is causing dependency errors. I created new file for general text related utility functions and moved ones that will not require refactor.
• envStore is not using actions anymore, just making direct call with api.ts
• replaceSupportEmail is using email from environment endpoint
• removed getEnvironment Reflux action :)

Related issues

Fixes #3910

[LMNTL]

This catch block is kind of redundant - because fetchGet() (without the notifyAboutError option set to false) already calls handleApiFail(). So if I make the /environment endpoint error, I see two error notifications:

[magicznyleszek]

Right! Pushed a fix :)