to survey table. We no longer check or keep track of the survey type.
Instead we look in the database to see if a survey item has at least 10
responses. If it does, that survey item was presented to the respondent
and we count it, and all responses when calculating the response rate.
Remove response rate timestamp from caching logic because we no longer
add the response rate to the database. All response rates are calculated
on the fly
Update three_b_two scraper to use teacher only numbers
swap over to using https://profiles.doe.mass.edu/statereport/gradesubjectstaffing.aspx as the source of staffing information
Implement large speed improvements to score calculations. Add page caching to all pages. Small speed improvements to response rate by filtering out
survey items without responses with `none?` `method vs count == 0`.
checkbox change. Draw bar graphs for each academic year selected.
Center bar graphs in their column. Color the columns to match the
sample colors on the checkboxes. Add scores on beta to top of graph.
Automatically display the most recent year of data for the district.
Modify logic for the insufficient data message or the 'measure not based
on student/teacher surveys' message so it only shows if there are no
bars with data to display.
