fix: Fixes #244. Concatenate balances to 2 decimal places on account overview page without rounding

Fix non working squashing

Select default array from imported list of tokens

fix: Fixes BigNumber error due to incorrect number type

Support BIP39 recovery and use BIP39 for new accounts (fix #207 #199)

feat: Show Wei validation only when sending Ether. Other tokens use validation if input more than token dps

fix: Fixes #251. Show validation error when value to send decimal places exceeds max decimal places of token

fix: Fixes #248. Add validation warning when user tries to send ETH or a token to the zero account

Fixes error `Uncaught Error: lt() number type has more than 15 significant` that occurs when for example the users
balance is 0.999368704999999998, the tx fee is 0.000063 (i.e. 3Gwei * 21000)

feat: Show Wei validation only when sending Ether. Other tokens use validation if input more than token dps

misc: Fixes #282. Add minimum version of Node.js. Add .nvmrc file