Fixes #7616 - Use validates_lengths_from_database

[daviddavis]

Note that unfortunately validates_lengths_from_database cannot be applied at a global level directly against ActiveRecord::Base, since the validates_length_from_database method requires the class to have a table name (with the ability to load the schema).

[ehelms]

I realize this are extremes, however, I figured out to check on larger lengths for various fields. On product create, I saw two different messages for label:

[daviddavis]

Yea, I talked with @jlsherrill about this yesterday. We decided to leave this as is for now. The best option would be to change the label field to 128 characters instead of 255 and then remove the length check from the LabelValidator but I didn't want to have to update all the label fields in our app.

[daviddavis]

Actually, looks like I can just exclude it from validates_lengths_from_database

[ehelms]

ACK