As a publisher I want type a range if I don't know an exact number of publications that I'm going to publish

[petkivim]

Acceptance criteria:

• registration form fields question1 and question2 must accept a number range, e.g. 0-1
• application form field publishing_activity_amount must accept a number range, e.g. 0-1

[petkivim]

No database schema changes required as question1, question2 and publishing_activity_amount are already varchars.

No need to change html element types as all the fields are already input.

Backend validation rules, and frontend question1 and question2 validation rules are already OK. Only frontend publishing_activity_amount validation rule must be updated.

[petkivim]

Done.