Combusto 1.0.2: header no longer stacks on narrow screens

Combusto 1.0.2 fixes the header on narrow screens.

A note on the interface: Combusto is currently in Spanish. Labels are shown as they appear on screen, followed by their English meaning in parentheses.

Fix

• The search box and the fuel selector no longer stack on top of each other. Below roughly 340px of effective width — a narrow desktop window or a browser at high zoom, not only a phone — Busca tu municipio (Search your town) and the fuel selector in the header didn't fit on the same line and wrapped onto two rows. The search box now narrows itself in that range so both stay side by side.
• A bit more vertical space in the header at every screen size.