rebuild index should also rebuild the model mappings

[diwu1989]

I think this will be necessary to put back the model mappings after clearing the index

if you agree with this, please release a new build afterwards so that the rebuild_index command works correctly

[landscape-bot]

Repository health decreased by 0.34% when pulling 6cc9beb on BetterWorks:rebuildINdex into 13e0838 on Sparrho:master.

• 3 new problems were found (including 0 errors and 3 code smells).
• 3 problems were fixed (including 0 errors and 3 code smells).