The touch hold is too long for the reactions/context menu

[erskingardner]

The time required to hold a touch to get the reactions and context menu to show up is too long. It should be quite a bit shorter. Something like 100-300ms is probably right.

The animations of the reactions are also too long, they should feel way more responsive and snappy.

[Quwaysim]

Fixed by @untreu2 in #88