merge with main git using merge_canonical_changes.py.

wiki/src/news/Tails_HackFest_2014.ar.po: updating as wiki/src/news/Tails_HackFest_2014.de.po has changed.
wiki/src/news/Tails_HackFest_2014.ca.po: updating as wiki/src/news/Tails_HackFest_2014.de.po has changed.
wiki/src/news/Tails_HackFest_2014.fa.po: updating as wiki/src/news/Tails_HackFest_2014.de.po has changed.
wiki/src/news/Tails_HackFest_2014.id.po: updating as wiki/src/news/Tails_HackFest_2014.de.po has changed.
wiki/src/news/Tails_HackFest_2014.pl.po: updating as wiki/src/news/Tails_HackFest_2014.de.po has changed.
wiki/src/news/Tails_HackFest_2014.sr_Latn.po: updating as wiki/src/news/Tails_HackFest_2014.de.po has changed.
wiki/src/news/Tails_HackFest_2014.tr.po: updating as wiki/src/news/Tails_HackFest_2014.de.po has changed.
wiki/src/news/Tails_HackFest_2014.zh.po: updating as wiki/src/news/Tails_HackFest_2014.de.po has changed.
wiki/src/news/Tails_HackFest_2014.zh_TW.po: updating as wiki/src/news/Tails_HackFest_2014.de.po has changed.