[Sidebar] Expand/collapse buttons for bookmarks sidebar
[ComboTabBar] Don't scroll to current tab on window focus change
Merge pull request #1118 from pejakm/expcoll

[Sidebar] Expand/collapse buttons for bookmarks sidebar
[ToolButton] Emit doubleClicked only on left mouse double click
[ComboTabBar] Middle click on left/right buttons now scrolls to current tab
[CodingStyle] Coding style updates in ComboTabBar
[WindowsTheme] Add extra icon for add-tab button when outside tabbar.
[SpeedDial] Allow dial's width up to 500px

New page screens will now be generated in 450x253px resolution

Closes #1116
Updated translations
Version 1.6.0
[OS/2] Build fix
[Docs] Added ntoe about GNOME_INTEGRATION build flag
[OS X] Fixed build on OS X

Closes #1122
[TabPreviews] Do not show tab previews when they are disabled in prefences
Handle window.beforeunload event

Closes #1041
Fixed some small issues when re-loading settings.
[OS/2] Another OS/2 build fixes
[Plugins] Fixed building Gnome/Kde password integration plugins
Ability to run portable version together with installed version.
[defines.pri] Correctly use new GNOME_INTEGRATION build flag