Make avatar image only visible after it has been successfully loaded

This avoids showing empty image frames while avatar images are
loading. Such an empty frame is especially annoying if there is no
avatar image for a user, since then the empty frame is shown and
disappears a moment later.

Change-Id: Ib431f5d1a2bada9de0207f6ac8cf655400cf35f7
Signed-off-by: Edwin Kempin <edwin.kempin@sap.com>
1 file changed