updates to styles on app settings page:

- global: more bottom padding for panels
- app description textarea has no width contraint, constrained heigh
- fix extra padding in panel footers
- larger form columns for app name and description
- remove deprecated environment list
- do not need extra right padding on nested list items

styles/components/_portfolio_layout.scss

@@ -336,6 +336,16 @@
         }
       }
     }
+
+    textarea {
+      max-height: 9rem;
+      max-width: none;
+    }
+
+    .panel__footer {
+      padding-bottom: 0;
+      padding-top: 0;
+    }
   }
 
   .activity-log {