Validation rule for "real name" field

[anvaruk]

Validation rule for "real name" field need to be adjusted as it brakes the template in some cases e.g https://pastvu.com/p/1384031

[kabalin]

The profile page also shortens those fields:

Should we limit length for all those fields and validate?

[kabalin]

When working on this, consider implementing validation through Mongoose schema (https://mongoosejs.com/docs/schematypes.html#string-validators) and propagate error to the UI. This may be a good start for using localization (define language string keys in the schema, make them replaced with actual string through localization framework #257)