Add Announcements

[davidbeig]

🎩 What? Why?

Please describe your pull request.

This PR allows the admins to create announcements for the community of Goteo.

Announcements are shown in the home page, and can be added to any other layout and it's controllers, to show some content to the users.

There are still some developments missing:

• Admin to create Announcements
• Add slider to handle multiple announcements
• Add translations
• Add LocalStorage support to not be visible everytime a user enters.
• Add announcements to Projects landing
• Add announcements to Channels

Testing

Describe the best way to test or validate your PR.

Run the migrations

bin/console migrate up

Create an entry for the announcement in the database. It should have a call to action and a type such as: project, general, donation

📷 Screenshots

Announcement for donations to the platform in tablet view and in mobile view.

Announcement to call to fill fiscal details

♥️ Thank you!