Scale back scope of pointer configurability. Implement. Remains to test existing refactored features, multibutton mice, three fingers emulates middle click mouse reporting, and each feature as a pointer action.

Perorm tail find from the old end of the scrollback buffer on rather than from the point of the initial find on.

Remove number formatter from scrollback lines - wouldn't allow values greater than 1k on Lion. Introduce abs position to line buffer. Have screen save abs position of search start to do tail searching from.  Only do tail searches in current tab. Only start tail search for the modified session.

Fixed an issue displaying two screens of different size in the arrangement preference pane.