Resolve "4 integrals from Valentin Albillo for testing the integrator"
Closes #1390 (closed)
Omit integrator variable menu if there is only 1 variable
Show current equation while Sfdx menu shown if called from EQN
Closes #1390 (closed)
Omit integrator variable menu if there is only 1 variable
Show current equation while Sfdx menu shown if called from EQN