NIHVIVO-1954: Done some markup refactoring changing ID's into classes.

Also,  in some cases I wasn't able to change id selectors because these are used temporarily due to the custom jsp tags (<v:input>) 
for editing forms which require an id and do not allow a class. This will be 
removed once we refactor the editing forms to Freemarker

webapp/web/jenaIngest/merge_result.jsp

@@ -18,7 +18,7 @@ if(!result.equals("No statements merged") && !result.endsWith("statements.")){%>
 <TR>
                 <br>
                  <p>Download non-mergeable statements.</p>
-                 <p><input id="submit"  type="submit" name="Download" value="Download" ></input></p>
+                 <p><input class="submit"  type="submit" name="Download" value="Download" ></input></p>
                 <br>
   </TR>
 <%}} %>