Users of the CC entry in the reply dialog expect a GMail-like workflow
in which a text entry that had not been submitted via the autocomplete
would still be added as a CC entry.
With this change, text values in the CC field are submitted as entries
when 'Send' or 'Save' is pressed. If the entry is an invalid email, the
standard toast is shown and the action is blocked.
Also adds an integration test suite for the reply-dialog with all
relevant test boilerplate copied from the standard reply-dialog_test
suite.
Bug: Issue 6194
Change-Id: I1e7aa97b1847ea2409136dfdc7e9f760e22cdbf5
f873c21133