CSS updates for 2.3

This is the placeholder issue for all CSS issues identified for %2.3

1. https://sandbox.genesys-pgr.org/doc/0/apis the <p> paragraphs should have top and bottom margins of: littlebitem. Funny, we have nice margins defined for wide screen :-(

2. "Saved lists of accessions" long name or description cause failures

Steps:

1. Go to the "https://sandbox.genesys-pgr.org";
2. Click on the "Browse" menu item;
3. Select several Accessions;
4. Click on the "My List" menu item;
5. Navigate to the "Accession List" tab;
6. Fill the "List title" and "List description" fields using long name / description for example 150 characters;
7. Click on the "CREATE NEW LIST" button;
8. Click on the "CLEAR THE LIST" button;

Act.res.: See attached screen:

3. https://sandbox.genesys-pgr.org/content/about/about List items have a color. Links should have css property - color, not list items

4. https://sandbox.genesys-pgr.org/wiews/PHL001 Links should be displayed like block elements, not inline-block.

5. https://sandbox.genesys-pgr.org/registration .form-group > div have unnecessary property - min-height.

6. https://sandbox.genesys-pgr.org/welcome The content of 'Quick Links' block has a strange alignment.

7. https://sandbox.genesys-pgr.org/explore The filters panel should be fixed.

8. https://sandbox.genesys-pgr.org/sel There is too much spacing in the tab 1.

9. https://sandbox.genesys-pgr.org/wiews/PHL001 .row + div have unnecessary border.