TableView on Groups and PreStages, and more

[benwhitis]

• Removed unnecessary argument from buildID. Argument was from early iteration to tableView function
• tableView on Groups and Prestages tab now draws from CSV
  • This required adding another function to dataPrep: buildScopes
• Added lblScopeType.stringValue to setRecordType, currently just going based on Pop-up selection
• Made “Browse” button wider on Intro view
• Changed line 87 of dataPrep to handle CSVs with 2 columns if needed
• Added long comment in ViewController to explain how tableView function works

[mike-levenick]

Merged. Keep up the good work.