keditbookmarks: add standard icons and shortcuts to Undo/Redo actions

Review Request #129423 - Created Nov. 18, 2016 and submitted

Jonathan Marten
These actions are created by QUndoStack in order that it can manage the action text.  However, this means that they do not get the standard KDE action icon or shortcuts set.  This change sets those by reference to the appropriate KStandardAction.
Built keditbookmarks (split repository master version) with this change, observed correct appearance and operation of Undo/Redo actions.
Christoph Feck
Jonathan Marten
Review request changed

Status: Closed (submitted)

Change Summary:

Submitted with commit aa247198f16179cf86768cfdeed94e7c557e864c by Jonathan Marten to branch master.