BUG #14047: Fix ambiguous shortcuts for selection.

Instead of creating separate shortcuts for each view,
pqStandardViewFrameActionGroup now creates a single shortcut and triggers the
appropropriate action for the active view whenever the shortcut is triggered.

Change-Id: I41c1ddaa9cb8591de9c5151a1030e0b7bc28c30e
Merge topic '14046_fix_selection_issues' into next

ea1d215 BUG #14047: Fix ambiguous shortcuts for selection.