Change panel sizes logic

[Bo-Duke]

Simplified panel sizes logic with a less dynamic but more map-centric layout.

Before :

• large screen, no content open : 1/3 filters, 2/3 map
• large screen, content open : 1/3 filters, 1/3 content, 1/3 map
• medium screen, no content open : 1/2 filters, 1/2 map
• medium screen, content open : 1/2 filters, 1/2 swappable section between content and map with the nav menu
• small screen : each section takes 100%, swappable with the nav menu

After :

• Large : Filters at fixed width, content at fixed width if open, map takes the rest of the width
• Medium screens : 1/2 filters, 1/2 content, 1/2 map, swappable with the nav menu
• Small screen : each section takes 100%, swappable with the nav menu

Screenshots

Other changes :

• Fix contribution popup going ouside viewport
• Fix filter input shrinking too much on small filters panels
• Fix contribution popup opening too fast on hover (and thus closing itself when you click instead of hover)
• Move nav menu above content and make it more visible on white background
• Fix close button not showing when multiple pictures are in details

[dtrucs]

LGTM 👍