Fix ThumbnailType height type
Fix ThumbnailType height type

Set non numeric values to null, otherwise installing with STRICT MySQL queries fails

avdevs/concrete5,MichaelMaar/concrete5,TimDix/concrete5,avdevs/concrete5,MichaelMaar/concrete5,TimDix/concrete5,MichaelMaar/concrete5,matt9mg/concrete5,TimDix/concrete5,matt9mg/concrete5,matt9mg/concrete5,avdevs/concrete5