tab stacking like opera 11 & app tabs aka pin tabs

tab stacking

also allow the ability to stack app aka pinned tabs. pin tabs survive browser restarts without prompting the user

also add this option from the opera forum

"AUTO TAB STACKING AND GROUPING WITHIN TAB STACKING OPTION
AUTO TAB STACKING

say i’m on facebook and i open a link in a new tab and that link takes me to another page on facebook. it should automatically stack that new tab on top of the first facebook tab.

say i was on facebook and opened a new tab that took me to a different site like site “x”, this tab should not stack on any facebook tab. it should just open in a new tab unstacked or stack on a tab that already has site “x” on it

say i have 2 tabs up. one is facebook and the other is youtube. say i’m on facebook and i click on a link that takes me to youtube. that should open in a new tab and stack on the other youtube tab.

AUTO GROUPING WITHIN TAB STACKING

say i have facebook, myspace, twitter, and youtube all stacked and they are all pinned tabs for easy access every browsing session. if i open a link on facebook that takes me to another page on facebook in a new tab then it should stack that new tab right beside the other facebook tab in the stack rather then just putting i all the way at the end of the stack beside the youtube tab in the stack"