Add default filters in options page

Author: Chrisvin

extension/options/options.html

@@ -41,6 +41,49 @@
                         </div>
                     </div>
                 </div>
+            </fieldset>
+            <hr/>
+            <fieldset class="form-group">
+                <div class="row">
+                    <legend class="col-form-label col-sm-12 pt-0">
+                        <strong>Default filter:</strong> (Applied to all searches)
+                    </legend>
+                    <div class="col-sm-12">
+                        <u><i>Common filters:</i></u>
+
+                        <div class="form-check">
+                            <label class="form-check-label">
+                                <input class="form-check-input" type="checkbox" name="question_with_code" id="question_with_code">
+                                Questions that contain code
+                            </label>
+                        </div>
+                        <div class="form-check">
+                            <label class="form-check-label">
+                                <input class="form-check-input" type="checkbox" name="community_wikis" id="community_wikis">
+                                Community wiki posts (<a href="https://meta.stackexchange.com/questions/11740/what-are-community-wiki-posts" target="_blank">reference</a>)
+                            </label>
+                        </div>
+                        <div class="form-check">
+                            <label class="form-check-label">
+                                <input class="form-check-input" type="checkbox" name="duplicate_questions" id="duplicate_questions">
+                                Exclude duplicate questions
+                            </label>
+                        </div>
+                        <div class="form-group" style="margin-top: 0.5rem;">
+                            <select class="form-control" name="answer_type" id="answer_type">
+                                <option value="0">All questions</option>
+                                <option value="1">Questions with answers</option>
+                                <option value="2">Questions with accepted answers</option>
+                                <option value="3">Questions with upvoted answers</option>
+                          </select>
+                        </div>
+
+                        <div class="form-group" style="margin-top: 0.5rem;">
+                            <label for="custom_filter"><u>Add custom filters</u>:</label> (<a href="https://stackoverflow.com/help/searching" target="_blank">filters reference</a>)
+                            <input type="text" class="form-control" name="custom_filter" id="custom_filter">
+                        </div>
+  
+                    </div>
                 </div>
             </fieldset>
             <hr/>