Fix bad card display for different use cases

**Is your feature request related to a problem? Please describe.**
Service cards can look bad for different usecases (very short service description), see screenshot:

**Describe the solution you'd like**
To avoid ugly card display, I recommend the following changes:

From NGO Hub > Civic Center app > Manage my services > Add new service
- Eliminate 'Descriere scurta serviciu' field
- Set validation for 'Descriere extinsa serviciu': min 250 characters
- Change label "Descriere extinsa serviciu" to "Descriere serviciu"

In the public Centru Civic portal:
Instead of 'Descriere scurta serviciu', the service cards should display the first 250 characters + "..." of the "Descriere serviciu" field (in NGO Hub).

**Describe alternatives you've considered**
- Changing validation for both fields to a minimum of 150 characters (short description), and 500 characters (long description).
or
- Not displaying any service description at all on the service cards

**Additional context**
Add any other context or screenshots about the feature request here.