Update claim indices when saving

(bug 58179)
Updating the claim indices when saving a claim. This allows proper subsequent interaction with
a claim/statement just added to the list of claims/statements.

Change-Id: I3d8940d7b34c29e6a89b375a596d6ee057464f32
(cherry picked from commit a278aaebe99fb8104ed1dae5b257a3f770908c50)