Attempted fix for when changing the profile of a tab after making use of the split-view feature.  Dangling pointers were being left in ViewManager::_sessionMap (even though _sessionMap previously stored QPointer guarted ptrs rather than raw pointers).  Call removeContainer() to remove views cleanly from the _sessionMap hash when the 'Close Other Views' action is triggered rather than simply deleting the view container directly.  Store raw pointers in _sessionMap variable since QPointer<> does not work here.

svn path=/trunk/KDE/kdebase/apps/konsole/; revision=734008