[core-v2.4.0-alpha.9, react-v2.2.3-alpha.5, vue-v2.1.3-alpha.6] : Feature - Expose css variables per AlienWorld and version bumps

[Adamj1232]

Description

Exposed variables for Alien World per discord

  --account-center-minimized-background
  --account-center-maximized-upper-background
  --account-center-maximized-network-section
  --account-center-maximized-app-info-section
  --account-center-minimized-address-color
  --account-center-maximized-address-color
  --account-center-maximized-account-section-background-hover
  --account-center-maximized-action-background-hover
  --account-center-minimized-chain-select-background
  --account-center-network-selector-color
  --account-center-maximized-network-selector-color
  --account-center-minimized-network-selector-color
  --account-center-app-btn-text-color
  --account-center-app-btn-background
  --account-center-app-btn-font-family

Checklist

• The version field in package.json is incremented following semantic versioning
• The box that allows repo maintainers to update this PR is checked
• I tested locally to make sure this feature/fix works
• This PR passes the Circle CI checks