conversations: set fallback avatar's color based on known username

- Sets the conversation cells' fallback avatar colors based on
  the username known when initializing. This should avoid the
  color flickering except when a lookup is actually in progress.

- Uses the value of the username known at cell init to set
  the fallback avatar's intitial.

- Removes the use of the fallback avatar initial in the case of
  the ringId being the best name. For now, no character is shown.

Change-Id: Ib42cc1c8aa31783c77f986a6a32976fa74b48d57
8 files changed
tree: 1848294b6844249c984f7542ba932bb558efe949
  1. Ring/
  2. .gitattributes
  3. .gitignore
  4. .gitreview
  5. compile-ios.sh
  6. COPYING