1.0.0: Improvements to m2 store detection (#52)

## This PR is a:

- [ ] New feature
- [ ] Enhancement/Optimization
- [ ] Refactor
- [X] Bugfix
- [ ] Test for existing code
- [ ] Documentation

## Summary

When this pull request is merged, it will make the extension work for stores with signed static files disabled and the RequireJS static head block moved to the body.

## Additional information