While typing a number, the new contact element is faded out. When the
number becomes valid it is opaque. If the element is clicked while
invalid, it displays 'Invalid number' and waits for the input to change
again. A new conversation is only opened if the number is valid.
// FREEBIE
Search view triggers an open event when a valid phone number is entered
and the 'Create new contact' card is clicked.
Inbox view should listen and respond to this event. It should also
disregard select events on the new contact element since those are fired
before phone number validation.
Finally, the search view can stop listening to select events because the
inbox view is already doing so.
// FREEBIE
Search box finds or creates a conversation given a phone number in
local (to the user's region) or international format.
Previously you had to enter e164 format to set up the conversation
correctly.
If the number is not valid, do not open the conversation.
TODO: user feedback on invalid numbers.
// FREEBIE
Using the search field produces a filtered view of all contacts and
groups containing the input. To make this fast and scalable, add an
index on a 'tokens' array containing words from the conversation name
and different forms of phone number.
Closes#365
// FREEBIE
