Add defaults list for use later

static/config.html

@@ -87,7 +87,7 @@ Unchecking this is not recommended, and this option only exists for exceptional
                     <label for="instanceSoftware">Instance software</label>
                     <br>
                     <select id="instanceSoftware" type="text" name="instanceSoftware" required>
-                        <option value="">(Please select)</option>
+                        <option value="" disabled>(Please select)</option>
                     </select>
                 </div>
                 <div class="half-width flex-row-reverse">
@@ -102,6 +102,12 @@ Unchecking this is not recommended, and this option only exists for exceptional
                 </div>
             </div>
             <br>
+            <label for="defaultsList">Default option for:</label><br>
+            <select id="defaultsList" class="full-width" multiple>
+                <option value="" disabled>(None, use the "Redirect always" button to set!)</option>
+            </select>
+            <button id="removeDefaults" disabled>Remove</button>
+            <br><br>
             <button type="submit">OK</button>
             <button type="reset" class="close">Cancel</button>
         </form>

static/main.css

@@ -126,6 +126,10 @@ abbr[title] {
     min-height: 50%;
 }
 
+.full-width {
+    min-width: 100%;
+}
+
 .full-height {
     min-height: 100%;
 }