Update Polish translation
Merge branch 'pr568'
Index cylgom and krepa smiley packs in repo
Embed cylgom and krepa emoticon packs

Thanks to @cylgom and @krepa098

Closes #555, fixes #304
more strings for translation
Merge branch 'pr569'
Better preview of cylgom emoticons
prevent duplicating emoticons on the list
network setting unification s/disable/enable/ UDP
Merge branch 'pr574'
style selector is translatable now - made right
Merge branch 'pr575'
Rename variable to match displayed text
Added libqt5sql5, to Debian depends

This fixes an issue where the client will not run, with message "error while loading shared libraries: libQtSql.so.5: cannot open shared object file: No such file or directory".
Merge branch 'pr577'
Handle received group actions
Jump to Add Friend form when quitting groupchat

Fixes part of #579
Fix minimumSize being too small

Fixes part of #579, graphical glitches with the splitter
Italian translation: update
Merge branch 'pr580'