Update cache to ignore values over 250 characters (D1118)

[droberts-ctrlo]

This code checks the %values hash and does not insert the value into the cache should there be any values over 250 characters inserted into the field.

[pawelwlod]

This code checks the %values hash and does not update insert the value into the cache should there be any values over 250 characters inserted into the field.

What do you mean by "update insert the value"?

[droberts-ctrlo]

This code checks the %values hash and does not update insert the value into the cache should there be any values over 250 characters inserted into the field.

What do you mean by "update insert the value"?

Fixed

[abeverley]

Thanks Dave, good work on getting the test added. A bit more to do though I'm afraid...

[abeverley]

Thanks Dave, this is great. Just 2 very minor things before merging: add a brief comment to the new test explaining what it is testing (I know I haven't always done this, and I've seen the problems it creates!); plus, remove the Data::Dumper from the included libraries.