Revert "backuppc: set multifieldTpl2 class"

This reverts commit cc1ebbb8f13f79586e558cf881c80aacc72694a2.
Revert "report: remove multifieldTpl class (move to core)"

This reverts commit 4ba964ba2d769c97dd158baecf0860ef947d95ba.
Revert "msc: Add help text for deployment_interval fields"

This reverts commit c094e6cb1ef8c4c4631951d1553354047a1a0a45.
Revert "core: add multifieldTpl and textTpm classes"

This reverts commit 3972ff565c406f9089bc30c00ebf4da541880f34.