This is the first part in the UI testing tutorial. The commit adds the skeleton for a
UI test. Currently the test only opens the conditional format manager
dialog and closes the dialog again.

Change-Id: Iff1d662d0aa675efad6b9682bf86a246c7a5a8d3
Reviewed-on: https://gerrit.libreoffice.org/29373Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Markus Mohrhard <markus.mohrhard@googlemail.com>