Open Beta - v8.4.0

Changes

• Added the ability to Buy and Sell RAM ( only for self account )
• Added the ability to Stake / Unstake CPU and NET ( only for self account )
• Added EOS account usage stats ( Staked CPU/NET, RAM, Refund time + amount )
• Added hardware support for Keypairs
• Added LiquidEOS/Scatter DIY hardware wallet support
• Added some polish to the UI
• Removed chrome extension flow from onboarding

Bugfixes

• Fixed error messages not returning to dapps in certain cases