Save a trip with one tap

The heart on a community or shared trip used to open a panel with the real Save button inside it. Now the heart is the button.

What changed

• Tap the heart to save a trip and tap it again to remove it. It fills and the count moves at once.
• If the save fails, the heart goes back to how it was.
• Signed out, the heart takes you to sign in.
• The share and comments panels now use the same light look as the rest of the page, with clearer text.