Reporting changes due to renaming of CSP and CSD

[bencodeorg]

The versions of CSP and CSD taught in 2017-18 were renamed csp-2017 and csd-2017, and new versions of the courses for next year were created as csp-2018 and csd-2018. This PR:

1. Creates a redshift-specific table called course_names that rolls up the two versions of the course into one.
2. Fixes issues introduced by this change by using course_names to apply a meta naming of courses across their various versions.

[bencodeorg]

@davidsbailey just FYI, should be good to go on course renaming/reporting.

[davidsbailey]

These changes look good! I'm not sure how important these are to fix, but here a few other places I am still seeing 'csp' in redshift code:

code-dot-org/aws/redshift/views/csp_csd_completed_teachers.sql

Line 26 in 038bc63

or se.script_id in (select script_id from analysis.course_structure where course_name in ('csp','csd'))

code-dot-org/aws/redshift/views/csp_assessments.sql

Line 58 in 8edd889

where se.user_id in (select user_id from analysis.csp_csd_started_teachers where course_name = 'csp')

code-dot-org/aws/redshift/tables/regional_partner_stats.sql

Line 7 in 36013c8

case when cc.course_name = 'csp' then 'CS Principles'

[bencodeorg]

Thanks for looking Dave -- those are all references to the 'csp' in the course_name_short column of the new analysis.course_names table instead of the name in courses that have the year suffixes on them, so I think we're good to go.

[bencodeorg]

I wouldn't be shocked if I missed something though so thanks for keeping an eye out!