More school page data

[shawnbot]

This PR will get the placeholder values caught up with the data for the elements that exist on the page, including:

• fixing the rendering bug with the average salary meter
• "Costs" section:
  • Tuition and fees $XX,XXX placeholders
  • Average net price by income bracket $XX,XXX placeholders
• "Students Who Have Defaulted on Loans" meter
• "Financial Aid & Debt" section:
  • "Average Total Debt" $XX,XXX
  • "Average Monthly Loan Payment" $XX,XXX
  • "Students Receiving Federal Aid" XX%
• "Graduation Rate" meters
• "Students Who Return After Their First Year" meter
• "Average Salary After Leaving School" meter
• "Former Students Earning Less Than $25K" meter