Add UI for changing default URL

Author: Chrisvin

extension/options/options.html

@@ -94,9 +94,22 @@
                     <div id="filter_suggestion_container">
                     </div>
                     <center style="margin-top: 1rem;">
-                        <button id="add_suggestion_filter" type="button" class="btn btn-outline-primary">Add Suggestion Filter</button>
+                        <button id="add_suggestion_filter" type="button" class="btn btn-outline-primary" disabled>Add Suggestion Filter</button>
+                    </center>
+                    <input type="hidden" value="0" id="filter_suggestion_count"/>
+                </div>
+            </div>
+            <hr/>
+            <div class="form-group row">
+                <div class="col-sm-12">
+                    <label for="default_url">
+                        <strong>Default URL:</strong>(Default is Stack Overflow)
+                    </label>
+                    <input type="text" class="form-control" name="default_url" id="default_url" aria-describedby="Default URL" disabled>
+                    <center style="margin-top: 1rem;">
+                        <button id="default_url_button" type="button" class="btn btn-primary" disabled>Edit</button>
+                        <button id="default_url_revert" type="button" class="btn btn-outline-primary" disabled>Revert</button>
                     </center>
-                    <input type="hidden" value="0" id="filter_suggestion_count" />
                 </div>
             </div>
             <hr/>