108 sponsors carousel

[babette-landmesser]

I added the breakpoints to the sponsor sliders and I set the following options: mobile:

• silver slide displays 1 sponsor per slide
• bronze slider displays 2 sponsors per slide

tablet:

• silver slide displays 2 sponsors per slide
• bronze slider displays 3 sponsors per slide

larger tablets:

• bronze slider displays 4 sponsors per slide

desktop:

• used pre setted options, 3 for silver slider and 5 for bronze slider

Additionally I added some spacing between the items to avoid direct contact between possible logos. On mobile I centered the single-sponsor slides in the silver slider.

[jlbellido]

Looks good to me @babette-landmesser ! Thanks! I'll create a separate ticket for the titles because I need that the silver and gold ones are smaller.