new file:   models/rayleigh.geo
	new file:   tasks/tests/rayleigh.xml
	new file:   tasks/tests/trapezium-p-wave.xml
	new file:   tasks/tests/trapezium-sh-wave.xml
	new file:   tasks/tests/trapezium-sv-wave.xml
	new file:   test
Revert test commit

This reverts commit 9237f53d592f03e3933c2c4412ee558641948367.