Swaps: gas icons, review sheet cleanup

Fixes APP-1548

What changed (plus any additional context for devs)

Adds new gas icons
Cleans up review sheet styles, hit boxes, gestures, and animations
Fixes an issue in input asset search where token contract addresses were being searched no matter the query — now only returning exact address matches
Fixes the input Close button visibility
Disables some Android borders that weren't rendering correctly, minor Android style fixes
Fixes paste button styles
Fixes a crash that occurred on Android when selecting an asset, due to event.stopPropagation not existing
Tested on both iOS and Android