Bug when cropping template {{Book}} with other templates inside

[bennylin]

Have been reported in #222

• https://commons.wikimedia.org/w/index.php?title=File:Pirandello_-_Come_prima,meglio_di_prima(page_5_crop).jpg&diff=prev&oldid=985836904

Basically when the {{Book}} template has other templates inside, it cut the top part of the template, like example above, or below:

• https://commons.wikimedia.org/w/index.php?title=File:Standard_Alphabet_(1863)Harvard(page_279_crop)_-_Malay_language.jpg&diff=prev&oldid=1021231801
• https://commons.wikimedia.org/w/index.php?title=File:Standard_Alphabet_(1863)Harvard(page_280_crop)_-_Malay_language.jpg&diff=prev&oldid=1021231914
• https://commons.wikimedia.org/w/index.php?title=File:Standard_Alphabet_(1863)Harvard(page_281_crop)_-_Batak_language.jpg&diff=prev&oldid=1021232171
• https://commons.wikimedia.org/w/index.php?title=File:Standard_Alphabet_(1863)Harvard(page_282_crop)_-_Batak_language.jpg&diff=prev&oldid=1021233109
• https://commons.wikimedia.org/w/index.php?title=File:Standard_Alphabet_(1863)Harvard(page_283_crop)_-_Javanese_language.jpg&diff=prev&oldid=1021233319
• etc.
• https://commons.wikimedia.org/w/index.php?title=File:Standard_Alphabet_(1863)Harvard(page_287_crop)_-_Bugis_language.jpg&diff=next&oldid=1021234052

Basically there must be some code that look for closing template }} and mistook these {{language}} or {{Creator}} templates.