Add support for phone numbers, and for highlighting only pre-tagged matches

[granoff]

Phone number support is provided using the phone number data detector. Some refactoring of existing code streamlined this enhancement.

There is also the addition of a flag that prevents matches that do not already have a link attribute from being decorated and made tappable. I needed this because the phone number data detector will match text like "phone number 508-555-1234" rather than just "508-555-1234" and I wanted patterns like the latter highlighted. Similarly, words like "toll free" are also picked up if they precede a phone number.

I had already written code in my own project to find and decorate just the phone numbers, so it made sense to add support to this class to honor pre-set links and their text and ignore matches without a pre-set link.

The use case for the latter part is a string with several phone numbers, not all of which are callable (e.g. a FAX number). By pre-decorating the callable numbers only, and setting the new ignoreMatchesWithoutLinkAttribute flag, only those matching text ranges already having a link are decorated by the class.

I also updated the demo app.

[jonataspc]

Great job man! That was exacty what I was looking for.