Model Validations and Insert/Update Batchs

[natanfelles]

Model data set with the set() method is not being validated.

The same issue occurs on setInsertBatch() and setUpdateBatch().

Data set with updateBatch() and insertBatch() also are not validate.

Same for replace().

I had started some overwritten here. Feel free to improve this.

I think we should leave the Model methods that override Query Builder as similar as possible to the Query Builder methods.

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Related to #865 #914