Remember previous location for Calculations
Remember previous location for Calculations

When navigating Calculations or My Calculations remember previous location to
allow navigating back to a previous page.

Signed-off-by: Brianna Major <6a62c0472e857db5994824f147beeb095c78d3a5@kitware.com>

OpenChemistry/mongochemclient,OpenChemistry/mongochemclient