implemented UI for find posts, debugged and tweaked the engine implementation

etc/web.xml

@@ -270,6 +270,14 @@
     <servlet-class>com.silverwrist.venice.servlets.AdminUserPhoto</servlet-class>
   </servlet>
 
+  <servlet>
+    <servlet-name>findpost</servlet-name>
+    <description>
+      Searches for posts in communities, conferences, or topics.
+    </description>
+    <servlet-class>com.silverwrist.venice.servlets.FindPost</servlet-class>
+  </servlet>
+
   <!-- the following are test servlets, they should go away -->
 
   <servlet>
@@ -413,6 +421,11 @@
     <url-pattern>/adminuserphoto</url-pattern>
   </servlet-mapping>
 
+  <servlet-mapping>
+    <servlet-name>findpost</servlet-name>
+    <url-pattern>/findpost</url-pattern>
+  </servlet-mapping>
+
   <!-- the following are test servlets, they should go away -->
   <servlet-mapping>
     <servlet-name>testformdata</servlet-name>