Byron/services selection

- cleaned up existing code
- implemented the "select services" layout & fragment
      > is dynamically populated with checkboxes corresponding to each service provided at the event
      > will eventually grab the information from the Salesforce DB, but for now grabs the info from a string array
- immediate todos: 
      > record input for the checkboxes
- further todos: 
      > start recording input for all forms into sharedPreferences 
Should have done this last time but I think we should actually declare the variables in the class and rather than in the function.  I think it cleans up the code below a little.  Also the names of the variables should be in camelCase while the resource being snake_case.  This is a comment for the lines below.