Hifi 19916

This patch is for the worklist 19916

e62834c prevents that avatars are reported offline when they are online
9662dce shown a message when the avatar teleporting to is offline.

 The pull also seems to take in patch 95cab15, it is not related to the wordlist but it patches a minor missing dir issue causing cmake . -GXcode to fail.
the 'cmake   -GXcode' command creates this directory in the hifi/tests/CMakeFiles dir and causes the 'cmake  -GXcode' to fail. The line removes that dir from from the TEST_SUBDIRS array.


CMake Error at tests/CMakeLists.txt:5 (add_subdirectory):
  The source directory

    /Users/marceledward/hf/19916/tests/CMakeFiles

  does not contain a CMakeLists.txt file.


-- Configuring incomplete, errors occurred!