Related to task T2132. Added logic to renameWallet in useWallet.js that checks if the wallet to be renamed is the currently active wallet, sets newWalletName for the currently active wallet. Changes planned: currently the changeWalletName success modal reads `newWalletName has been changed to newWalletName` instead of `oldWalletName has been changed to newWalletName`. As well, I did not include the delete wallet button for the currently active wallet, but this can be added if it is desired.