Would a Cloudshift targeting Zada, Hedron Grinder also target tokens?
Yes, if you cast Cloudshift targeting your Zada, Hedron Grinder, Zada will make a copy of Cloudshift targeting each other creature you control, including tokens. Cloudshift says


  Exile target creature you control, then return that card to the battlefield under your control.


So, any creature you control is a valid target.

Note that when the copies resolve, any creature tokens you control will be exiled and they will not return, because of rule 110.5g:


  A token that has left the battlefield can’t move to another zone or come back onto the battlefield. If such a token would change zones, it remains in its current zone instead. It ceases to exist the next time state-based actions are checked; see rule 704.