ENH: add ability to move a markup to another list

Added a right click context menu with a sub menu to select where
in the new list to move the markup, then pop up a dialog
to allow the user to select the target list. Only works on
one row at a time for now. Use the object name on the
list selection dialog to pass along the target position.
Added logic and node methods to move and insert markups
in the markups node. Added a new logic test for the move
functionality.
ENH: make click to jump optional

Added a checkbox to enable clicking in the name column
triggering a jump to slices call in the slice viewers.
Added two radio buttons to choose if the jump should be
offset or centered.
From feedback at the MIT Summer '13 project week,
defaults set to no click to jump, centered.