* Id - Required
* Title - Required
* Repository - Required
* Description - (future - get from hoster autom.) - Required
* Read-me - Full description of the problem (will be obtained from hoster?)
* Author - (future - get it from hoster)
1. Checking if the hoster url is a valid repository
2. Read-me is required.
3. Check if the hoster URL be in the database (?)