Merge branch 'hotfix/bucket-underscores'
docs(contributing): Make build instructions easier to understand

* Fix some easily misunderstood wording on build instructions
* Separate production and development build instructions

[ci skip]
Merge branch 'develop'
fix: Fix paths on default tempaltes
fix: Add placeholder images to build
chore(*): start of 4.1.0 work
[skip ci]