This reverts commit 861a0fd9.

This reverts commit f376c2ff, reversing
changes made to abe9be72.

If there is an active group and (groupmode != NOGROUPS)
the displayed info is related with that single group.

This reverts commit 4e75dd78, reversing
changes made to f376c2ff.

This reverts commit 7bd78083, reversing
changes made to 1e7e4d5f.

Also, changing returned passwords to lower case when
maching against an md5() string or a sha1() string.

Without the patch a course would not be created if it contained
an enrolment method column with an empty value. e.g.:

shortname,fullname,category,enrolment_1,enrolment_1_disable
courserestored,Course restored,1,,
courserestored2,Course restored 2,manual,1

Credit goes to Marina Glancy for catching during the testing.

Conflicts:
	backup/util/ui/renderer.php

Thanks to Pau Ferrer Ocaña and Avi Levy for
their work on this issue.

They should know that they can only be restored on the front
page before selecting the destination course.