(bug 38670) Provide a no results found view

Provide a view showing:
- A feedback message where the current search term is displayed.
- Suggested options: based on likely languages and languages with one
additional level of editing distance than the used in the search algorithm.
- Instructions for search and browse including links to all the sub-regions
available.

* Introduced success, noresults callbacks for language and region filters
* Region filter can be a link for a region alone.

Change-Id: I713b62911bb32e1b1427320ced767b144180c5c4

UniversalLanguageSelector.hooks.php

@@ -113,6 +113,22 @@ class UniversalLanguageSelectorHooks {
 					</div>
 				</div>
 			<div class='row uls-language-list'></div>
+			<div class='row uls-no-results-view'>
+				<h2 class='ten columns end offset-by-one'>No results found for \"<span id='uls-no-found-search-term'></span>\"</h2>
+				<div id='uls-no-found-more'>
+					<div class='ten columns end offset-by-one'>
+						<p>You can search by language name, script name, ISO code of language or you can browse by region:
+							<a class='uls-region-link' data-region='NA' href='#'>America</a>,
+							 <a class='uls-region-link' data-region='EU' href='#'>Europe</a>,
+							 <a class='uls-region-link' data-region='ME' href='#'>Middle East</a>,
+							 <a class='uls-region-link' data-region='AF' href='#'>Africa</a>,
+							 <a class='uls-region-link' data-region='AS' href='#'>Asia</a>,
+							 <a class='uls-region-link' data-region='PA' href='#'>Pacific</a> or
+							 <a class='uls-region-link' data-region='WW' href='#'>Worldwide languages</a>.
+						</p>
+					</div>
+				</div>
+			</div>
 		</div>";
 		return true;
 	}