refactor: remove spring security - sign out

Restore sign out functionality.

#1961

src/main/java/ai/elimu/web/SignOutController.java

@@ -0,0 +1,26 @@
+package ai.elimu.web;
+
+import javax.servlet.http.HttpServletRequest;
+
+import org.apache.logging.log4j.Logger;
+import org.apache.logging.log4j.LogManager;
+import org.springframework.stereotype.Controller;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestMethod;
+
+@Controller
+@RequestMapping("/sign-out")
+public class SignOutController {
+
+    private Logger logger = LogManager.getLogger();
+
+    @RequestMapping(method = RequestMethod.GET)
+    public String handleRequest(HttpServletRequest request) {
+        logger.debug("handleRequest");
+
+        // Remove Contributor object from session
+        request.getSession().removeAttribute("contributor");
+
+        return "redirect:/sign-on?signed_out";
+    }
+}

src/main/webapp/WEB-INF/jsp/admin/layout.jsp

@@ -107,7 +107,7 @@
                                 <li><a href="<spring:url value='/analytics' />"><i class="material-icons left">timeline</i><fmt:message key="analytics" /></a></li>
                             </c:if>
                             <li class="divider"></li>
-                            <li><a id="logout" href="<spring:url value='/logout' />"><i class="material-icons left">power_settings_new</i><fmt:message key="sign.out" /></a></li>
+                            <li><a id="logout" href="<spring:url value='/sign-out' />"><i class="material-icons left">power_settings_new</i><fmt:message key="sign.out" /></a></li>
                         </ul>
                     </ul>
 

src/main/webapp/WEB-INF/jsp/content/layout.jsp

@@ -213,7 +213,7 @@
                                 <li><a href="<spring:url value='/analytics' />"><i class="material-icons left">timeline</i><fmt:message key="analytics" /></a></li>
                             </c:if>
                             <li class="divider"></li>
-                            <li><a  id="logout" href="<spring:url value='/logout' />"><i class="material-icons left">power_settings_new</i><fmt:message key="sign.out" /></a></li>
+                            <li><a id="logout" href="<spring:url value='/sign-out' />"><i class="material-icons left">power_settings_new</i><fmt:message key="sign.out" /></a></li>
                         </ul>
                     </ul>