Add feature to fix link drag&drop in CC

This change adds an option to fix the drag&drop bug that exists in
CKEditor (https://dev.ckeditor.com/ticket/13569), which is the library
used for the rich text editor in the Community Console.

Fixes: #20
Change-Id: Ic82bf6ee6d583876858f21291723dacb5e74debe
diff --git a/src/options.html b/src/options.html
index b571a8c..dc63253 100644
--- a/src/options.html
+++ b/src/options.html
@@ -22,6 +22,7 @@
         <input type="checkbox" id="stickysidebarheaders"> <label for="stickysidebarheaders" data-i18n="stickysidebarheaders"></label><br>
         <input type="checkbox" id="ccdarktheme"> <label for="ccdarktheme" data-i18n="ccdarktheme"></label> <span class="experimental-label" data-i18n="experimental_label"></span><br>
         <input type="checkbox" id="ccforcehidedrawer"> <label for="ccforcehidedrawer" data-i18n="ccforcehidedrawer"></label><br>
+        <span id="dragndrop-wrapper" hidden><input type="checkbox" id="ccdragndropfix"> <label for="ccdragndropfix" data-i18n="ccdragndropfix"></label></span><br>
       </p>
       <h4 data-i18n="profileindicator_header"></h4>
       <p>