[Merge] lp:~osomon/ubuntu-ui-extras/tabDelegate-objectName-index into lp:ubuntu-ui-extras

[Andrew Hayzen]

Review: Approve

LGTM, I wonder if there is any performance difference between .arg() and just doing "tabDelegate_" + index
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https://code.launchpad.net/~osomon/ubuntu-ui-extras/tabDelegate-objectName-index/+merge/320721
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