Minor consistency fix
Redo tab modal dialogs, fixes #55
Properly react to cancellation of file open dialog, fixes #81
Show frame only if scroll bars are visible
Use style hint to decide which button has close role, fixes #11
It should be updated on style change but it does not make sense right now, due to QTBUG-21419 and plans to create fully custom tab bar widget
Update tab preview when current index changes
Show amount of cookies for each domain