new i18n tw dictionary with plural support

(automatic submodule update by svn2git)

https://mediawiki.org/wiki/Special:Code/pywikipedia/9450
Missing PLURAL tag allowed

https://mediawiki.org/wiki/Special:Code/pywikipedia/9451
i18n tw support for template.py

https://mediawiki.org/wiki/Special:Code/pywikipedia/9453
small fix

(automatic submodule update by svn2git)

https://mediawiki.org/wiki/Special:Code/pywikipedia/9454
Create a new talk page if it does not exist

https://mediawiki.org/wiki/Special:Code/pywikipedia/9455
update namespace aliases for pi wiki

https://mediawiki.org/wiki/Special:Code/pywikipedia/9458
update namespace aliases for id wikisource

https://mediawiki.org/wiki/Special:Code/pywikipedia/9459
update language_by_site

https://mediawiki.org/wiki/Special:Code/pywikipedia/9460
enable PLURAL support

https://mediawiki.org/wiki/Special:Code/pywikipedia/9462
doc fix

https://mediawiki.org/wiki/Special:Code/pywikipedia/9463
Plural rules for pywikipedia based on mw r95194 of plural-gettext.txt

https://mediawiki.org/wiki/Special:Code/pywikipedia/9464
fix for default variant

https://mediawiki.org/wiki/Special:Code/pywikipedia/9466
enable PLURAL variants from plural.py

https://mediawiki.org/wiki/Special:Code/pywikipedia/9468
fix lang assingment reported by bug #3400040

https://mediawiki.org/wiki/Special:Code/pywikipedia/9470
moved to archive

https://mediawiki.org/wiki/Special:Code/pywikipedia/9477
moved to archive

https://mediawiki.org/wiki/Special:Code/pywikipedia/9479
update copyright date

https://mediawiki.org/wiki/Special:Code/pywikipedia/9480
cleanup doc string

https://mediawiki.org/wiki/Special:Code/pywikipedia/9481
remove trailing whitespaces; update copyright string

https://mediawiki.org/wiki/Special:Code/pywikipedia/9482
missing bracket; bugfix for r8633

https://mediawiki.org/wiki/Special:Code/pywikipedia/9483