Revert "allow dynamic changements of startOfBusiness and endOfBusiness"

This reverts commit a83d7fcba01a1c8a626a256b78a0b40cc9f9af50.
Revert "apply pull request 32 Business hours"

This reverts commit 59b3d41af490a7326b52b91d4ac884aae75170ea.
apply pull request 78 Adding background colors + annotations