Block "Submit request" button if 0 accession available to request
Steps:
- Go to "https://sandbox.genesys-pgr.org/sel";
- Add "ITC0001" to my list;
- Click button "Send request";
- On the second step enter valid data;
- Click button "Next step";
**Expected result: ** "Submit request" button should be disabled;
Actual result: "Submit request" button is active;