Use latin1 encoding most of the time where default encoding was used
before. Qt 4 assumes latin1 by default while Qt 5 uses utf-8 which is
not what we want.
Use utf-8 encoding in some places where default encoding was used before.
This includes strings coming from RPC.
Fix an issue with SortMode::names[] (filters.cc) where missing comma
between "sort-by-queue" and "sort-by-ratio" resulted in two array entries
being merged into solid "sort-by-queuesort-by-ratio" string and all the
following items being shifted compared to their enum counterparts.
Add a bit more comments. Adjust some phrases for pluralization.
Mark menu shortcuts as not translatable (changing them doesn't do any
good but people start translating "Ctrl" as "Ktrl" etc. which breaks
the shortcuts).
Pull current translations from Transifex.
Prefer C++-style over C-style type casting.
Use qApp instead of QApplication/QCoreApplication::instance().
Use explicit QString::fromLatin1()/fromUtf8() where applicable.
1. add the option the code to be used under GPLv2 or GPLv3; previously only GPLv2 was allowed
2. add the "proxy option" as described in GPLv3 so we can add future licenses without having to bulk-edit everything again :)
3. remove the awkward "exception for MIT code in Mac client" clause; it was unnecessary and confusing.
1. add "show backup trackers" togglebutton.
2. fix bug where toggling "show more" didn't take effect instantly
3. sync the "show more" preferences key with the GTK+ client
4. fix a couple of minor tracker text inconsistencies with the GTK+ client
