Also add a slide-down transition to video modal opening

* master: (72 commits)
  Remove unused Reserve.burnToken function (#984)
  Persistent disks for transaction nodes (#1016)
  [Wallet] Differentiate dollars and gold transactions (#1021)
  [wip] LinkedList cycle fix (#941)
  Fix slither issues (#572)
  [Wallet] Disable import wallet button when the backup phrase is not valid (#1012)
  Fix fixed fraction division underflow (#952)
  [CircleCI]Run protocol coverage once a day (#1018)
  Expose and test validator set precompiles (#874)
  [celotool] Fund Faucet accounts on network init (#990)
  Add Nexmo as a text provider for MX and US numbers (#1002)
  [CircleCI]Run protocol test with and without coverage (#991)
  Increase memory requests for Alfajores nodes (#966)
  [wallet]Select blockchain url based on testnet (#936)
  Pilot app config and ability to not show testnet banner (#1009)
  Add Linux onboarding steps and a TOC to SETUP.md (#1004)
  Add README-dev.md (#989)
  [Wallet] Exchange flow formatting fixes (#961)
  [celotool] Cleanup genesis block generation (#988)
  [celotool] Some ❤️. Clean up (#948)
  ...

# Conflicts:
#	packages/web/src/header/Header.3.tsx