Slot Viewer Review1: (1.5 Fix) Series Slots with Periodic Input: READ-ONLY IN PERIODIC INPUT MODE
Bug Number: n/a
Release notes (y/n): no
For Release Nums: 7.2

See Review1 Notes:
  http://cadswes2.colorado.edu/~philw/2017/SlotViewer/Review1/

1.5: (Question about which slots initially open in the Slot Viewer).

This uncovered a problem with Series Slots with Periodic Input, shown in 
the Slot Viewer.  Naturally, only such a slot's SERIES DATA (not Periodic 
Data) is shown in the Slot Viewer.  However, that series data needs to be 
READ ONLY if the slot is in PERIODIC DATA INPUT MODE.

To address this problem, a new 'dynamicReadOnly()' predicate was added to 
the Q3GUI/SlotQDlgSlotData class.  Formerly, the _readOnly data member was 
directly accessed by "friend" clients, including the SlotDataTableModel class.
Now that class uses this new predicate, which, in the case of Series Slots 
with Periodic Input, in the Slot Viewer context, checks the SeriesSlot's 
"alt input mode" state.