[BUG] Phone number field at Login should not require spaces

[DMalone87]

Describe the bug
When creating an account, the form will throw an error unless you use spaces in the phone number. Ex: "555 xxx xxxx". One should be able to use dashes or periods or the phone number should automatically add the desired formatting when you're typing out the number.

To Reproduce
Steps to reproduce the behavior:

1. Go to 'dev.nationalpolicedata.org'
2. Click on 'Join Us'
3. Enter the required information into the form and click submit.
4. See error

Expected behavior
When you are entering a phone number for the account creation process, it should either not be as strict or it should handle the formatting automatically.

Screenshots

[rosyntow]

I have created a pull request (#273) for this ticket.
Modified the regular expression to cover these variations of the formats of phone numbers below:
+123456789012
1234567890
(123) 456-7890
123-456-7890