* Switches to font size that fits a value as small as 1 Wei on the screen when more than 9 digits entered

* Switches back to default font size when amount of digits entered is 9 or less again

* Caters for when user unchecks the Max Value button

* Opens link to the Etherscan account page when the user clicks the TokenBalance component on the "Send Ether" page

* Opens link to directly to the specific token page of the Etherscan account when the user clicks the TokenBalance component on the "Send THIBCoin" (or other non-Ether token) page

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

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