Added Text, Audio, Workout buttons in TraineeDetail. TODO: Right now they launch MainActivity and SplashScreenActivity - change when John pushes his messaging activities. Also added more layout stuff to fragment_trainee_detail.xml
Merge branch 'master' of github.com:csci477-team4/pearsports-android into trainee_list
Changed the Text message activity button in TraineeDetail to launch MessageActivity
Passes token between activities via Intents under key 'token'
Merge pull request #7 from csci477-team4/trainee_list

Added text, audio, workout buttons to TraineeDetail, with token