Plus, minus and other forbidden chars are allowed in text attributes when they are not at the beginning of the string

[dpalomino]

Steps to reproduce the error

Related with #1619

Plus (+), minus (-) and other signs (<, >, etc) are allowed in text fields when these are not at the begging of the field. For instance, the following text strings are rejected:

"-asdf"
"+asdf"
"++++asdf"

But these other ones are accepted:

"text+++text"
"text+----text"

This behaviour is the same when adding or editing a field via the web interface, or submitting records with ODK or geoODK.

See screenshot:

[seav]

I think this is acceptable behavior. If you disallow this, you would be rejecting perfectly fine text like "Adolfo Suárez Madrid-Barajas Airport", "Guinea-Bissau", and "Olivia Newton-John".

[dpalomino]

I think this is acceptable behavior. If you disallow this, you would be rejecting perfectly fine text like "Adolfo Suárez Madrid-Barajas Airport", "Guinea-Bissau", and "Olivia Newton-John".

Sounds good @seav, that's true. Thanks :-)

[amplifi]

Expected behavior; closing.