TraineeDetail - Personal Info and Stats now live

## Description
+ `TraineeDetail` now displays personal info on each trainee pulled from the Trainer API
+ `TraineeDetail` also displays summary stats pulled from the Trainer API
+ Made some UI changes to `fragment_trainee_detail.xml` using Pear Sports' colors and font

## Details
+ Made API request and parsed personal info and stats data in `TraineeListFragment`
+ Personal info is stored in `TraineeContent.TraineeItem` in `HashMap<String,String> traineeInfo`
+ Stats is stored in TraineeContent.TraineeItem.Stats  
  + right now, the data is stored in `HashMap<String,String> statsMap`

### Notes
+ `TraineeDetail` now contains all elements from the prototype except for the Contact Card.