Clarify wording in experimental / discontinued interfaces category.

Author: Zimmi48

pages/user-interfaces.html

@@ -80,13 +80,13 @@
 </div>
 
 <div class="framework">
-<div class="frameworklabel">Experimental / discontinued interfaces</div>
+<div class="frameworklabel">Experimental or discontinued interfaces</div>
 <div class="frameworkcontent">
 
 <p>
 There have been many experiments over the years.  Here are some
-additional user interfaces that have stayed at the experimental level
-or whose maintenance has been discontinued and or is currently
+additional user interfaces that are still at the experimental level
+or whose maintenance has been discontinued or is currently
 uncertain:
 <ul>
 <li>