Add demo data
Use the right validators
Update bootstrap
rename template
Revert "rename template"

This reverts commit f3e682a102f0f30d58ab7c8953e326d534054dc0.
Revert "Revert "rename template""

This reverts commit a791aa118a6ecb24e755107ee65c1acdac6b65f8.
Add history undo, reimplement purchases and minor improvements