Update bower dependencies, fix redraw regression

- In Mithril, `finally` has been removed from promise objects as it is not part of the ES spec. See https://gist.github.com/jish/e9bcd75e391a2b21206b for info on the substitute.
- Fix a regression introduced in e5a7013 which broke some redraws

js/forum/src/components/ChangeEmailModal.js

@@ -87,7 +87,8 @@ export default class ChangeEmailModal extends Modal {
 
     app.session.user.save({email: this.email()}, {errorHandler: this.onerror.bind(this)})
       .then(() => this.success = true)
-      .finally(this.loaded.bind(this));
+      .catch(() => {})
+      .then(this.loaded.bind(this));
 
     // The save method will update the cached email address on the user model...
     // But in the case of a "sudo" password prompt, we'll still want to have

js/forum/src/components/ForgotPasswordModal.js

@@ -91,6 +91,7 @@ export default class ForgotPasswordModal extends Modal {
         this.success = true;
         this.alert = null;
       })
-      .finally(this.loaded.bind(this));
+      .catch(() => {})
+      .then(this.loaded.bind(this));
   }
 }

js/forum/src/components/NotificationList.js

@@ -120,7 +120,8 @@ export default class NotificationList extends Component {
         app.session.user.pushAttributes({newNotificationsCount: 0});
         app.cache.notifications = notifications.sort((a, b) => b.time() - a.time());
       })
-      .finally(() => {
+      .catch(() => {})
+      .then(() => {
         this.loading = false;
         m.redraw();
       });

js/forum/src/components/UserBio.js

@@ -91,10 +91,12 @@ export default class UserBio extends Component {
     if (user.bio() !== value) {
       this.loading = true;
 
-      user.save({bio: value}).finally(() => {
-        this.loading = false;
-        m.redraw();
-      });
+      user.save({bio: value})
+        .catch(() => {})
+        .then(() => {
+          this.loading = false;
+          m.redraw();
+        });
     }
 
     this.editing = false;

js/forum/src/utils/PostControls.js

@@ -147,11 +147,14 @@ export default {
   deleteAction(context) {
     if (context) context.loading = true;
 
-    return this.delete().then(() => {
-      this.discussion().removePost(this.id());
-    }).finally(() => {
-      if (context) context.loading = false;
-      m.redraw();
-    });
+    return this.delete()
+      .then(() => {
+        this.discussion().removePost(this.id());
+      })
+      .catch(() => {})
+      .then(() => {
+        if (context) context.loading = false;
+        m.redraw();
+      });
   }
 };