Turn on to run all widgets tests by make check. Move widgets test to tests/auto.

Change-Id: If3617d86ea44f665a44a54b6ba57935b69220a9e
Reviewed-by: Jocelyn Turcotte <jocelyn.turcotte@digia.com>
Reviewed-by: Andras Becsi <andras.becsi@digia.com>