Fix pylint violations from #2129
1st draft external graders doc
External Graders First Review Draft
Notify instructors that static pages are  public
Cache course location translations
Create local memory caching entry for location mapping.
Minor updates and typo fixes
Update information about Randomization setting
Minor update to text of "Randomization"
Revise randomization information per feedback from Victor
Further update randomization documentation
Minor updates and typo fixes
Update information about Randomization setting
Revise randomization information per feedback from Victor
Further update randomization documentation
Merge pull request #2325 from edx/sylvia/documentation/small_fixes

Sylvia/documentation/small fixes
Add set to mocked cache
Only create loc_cache CACHE entry if it doesn't exist in ENV_TOKENS config.
Merge pull request #2224 from edx/giulio/static-pages-text

Notify instructors that static page content is publicly accessible
Convert i18n/make_dummy.py to a standalone script

LMS-1967