FIX: website/spiegel.lua: title pattern

Other:
* Add an additional title pattern to fall back to

Signed-off-by: Toni Gundogdu <legatvs@gmail.com>
tests: default/spiegel-1.json: Remove, no longer available

Signed-off-by: Toni Gundogdu <legatvs@gmail.com>
FIX: website/tagtele.lua: title pattern

Other:
* Add an additional media title pattern to fall back to
website/tagtele.lua: Parse thumbnail URL

Signed-off-by: Toni Gundogdu <legatvs@gmail.com>
tests: default/tagtele.json: Add thumbnail URL property

Signed-off-by: Toni Gundogdu <legatvs@gmail.com>