Only autolink web URLs and email addresses in chat window, but not phone numbers.

Links would be created for *every* number (even with only two or three
digits) in the chat window, at least with a German locale.
Add icons to the status selection spinner.
Add clear button to the status message TextEdit.
Make the status message TextEdit capitalize the first word.
Remove "Open Chat" from roaster context menu, since it is redundant.

No need to spend precious screen real estate in the context menu for
the default tap action.