[Sponsors] Partners & media partners

[jlbellido]

We need to add 2 new sponsorship levels

• Partners
• Media partners

We need:

• [x] Add the new options to the field: field_sponsorship_type.
• [x] We need to create the 2 new displays in the sponsors view.
• [x] We need to add the new blocks at AllSponsorsBlock

We will use the bronze level image size. No fronted work is expected.

[jlbellido]

Starting this.

[jlbellido]

Done