Now correctly clearing buffer reagent selections when doing a test Clear.
Also, marking inert now immediately saves, because a verification step
is not necessary or useful, in this case.

Now recalculating recipe (and thus hypothetical color) after a Clear. Also,
clip status now clears when doing a white extrapolation.

3 way reactions should now allow you to change the position of the buffer
reagent from first to last.

Implemented a system that will allow ingredients to be safely renamed, in the
future, without invalidating profiles. Standardized to PP's "FalconBait."

Analyzing a Mixture should no longer cause the Pending Tests lists to
scroll down a little, for no reason.

Import and Export should be working correctly. Can now import Practical Paint
reactions.txt files. Fixed a crash taht occurred when switching profiles.

Improved up behavior for clipped reactions and 3-way reactions, and fixed
related bugs.