reimplemented insert chat line function: every line in own table
bug in file transfer widget displaying fix
Italian translation: update
Merge pull request #398 from Ansa89/italian-translation

Italian translation: update
Merge pull request #395 from apprb/chat

Reduction of CPU usage on new message insert
Update french translation
Update Polish translation
Merge commit 'refs/pull/399/head' of https://github.com/tux3/qTox
css styles for mainHead and mainContent in widget.cpp

fixes problems with ugly UI on non-standard system theme.
before: https://i.imgur.com/XJ0mbpi.png
after: https://imgur.com/a/UbgNz
debian: Exclude libs from source package
Try to link opencv statically in linux packages