updated polish translation
more pl translations

* removed unused code
* notification about rejected call(not tested)
* notification about cancelled call
another unused opration
autosaveDir, useEmoicons, selectTimestamp added to GUI and settings
autosavedir: keep previous directory in case of cancelling
autoaccept: unused code
Merge branch 'pr626'
Merge branch 'pr630'
Check Tox DNS protocol version, reject if not tox1

We only support tox1 for now, and soon we should tox3
Fix compilation warning
global autoaccept files
Swedish translation
Implement tox3 support, keep tox1 as silent fallback
Merge branch 'pr632'
cleaning in settings.cpp filetransferinstance.cpp and friendwidget.cpp, global autoaccept, per friend and qmenunu simplificated
Enable swedish translation
window titles
Add .gitattribute, fix github linguist mistakes

No, qTox isn't written in TypeScript, those are XML translation files.
Merge branch 'pr634'
Fix typo