Change the error message for "No VOIP allowed" to "Invalid phone number"

closes #1319 (closed)

** Testing ** We need to test verification for:

• twofactor
• rewards (in Wallet)
• Onboarding

So do this for twofactor in settings, rewards and onboarding:

1. Create a new user
2. Go to wallet
3. Input an invalid phone. You should see an error message saying "Invalid phone number"
4. Input a voip phone (if you know of one). It should show a message saying that voip phones aren't allowed
5. Input a valid phone. It should work