Add Update Email View

This commit:

- Displays the user's email that we have on records
- Adds a button in the settings to update email
- Adds a form view to update the email
- Fixes CSS for the Email icons and the email form
                         ~ Credits to @hallaathrad

- Linting fixes and updated with Berkeley's Comments

- Streamline checks and fix scope

- Add AJAX Calls

- Add flash messages

- Update the views & add XHR value

server/boot/user.js

@@ -149,6 +149,7 @@ module.exports = function(app) {
   router.get('/email-signup', getEmailSignup);
   router.get('/email-signin', getEmailSignin);
   router.get('/deprecated-signin', getDepSignin);
+  router.get('/email-update', getUpdateEmail);
   router.get(
     '/toggle-lockdown-mode',
     sendNonUserToMap,
@@ -226,6 +227,7 @@ module.exports = function(app) {
     res.redirect('/');
   }
 
+
   function getDepSignin(req, res) {
     if (req.user) {
       return res.redirect('/');
@@ -235,6 +237,15 @@ module.exports = function(app) {
     });
   }
 
+  function getUpdateEmail(req, res) {
+    if (!req.user) {
+      return res.redirect('/');
+    }
+    return res.render('account/email-update', {
+      title: 'Update your Email'
+    });
+  }
+
   function getEmailSignin(req, res) {
     if (req.user) {
       return res.redirect('/');