Revert 2edd6fd..4c94469

This rolls back to commit 2edd6fd52c8f1292b733ec58778f81386c3043e9.
Revert 702dbe6..4c612fd

This rolls back to commit 702dbe63806f9518bfe4f7bb88d1faf03aa7fb99.
Changed relationship between *DerivationEquations* and *ResultDerivationEquations*

…to be 1 to many.  This allows for a single DerivationEquation to be
applied to a number of Results, each with their own related Results,
but all sharing the same equation form and constants.
* I applied this after rolling back my previous two commits, where I
had forgotten the reason for setting up these two tables the way they
were.