brandon bowersox-johnson <> in openlmis-cce

Added Slack and Scalyr

OLMIS-1170: Clarified the explanations for error message situations based on review feedback.

OLMIS-1170: Revised translation explanation based on further review feedback.

OLMIS-1170: Clarified translations and aAdded HTTP code for DELETEs to address review feedback.

Fixed line breaks in links so they are interpreted by ReadTheDocs.

OLMIS-1170: Revised proposed error guidelines based on review feedback

OLMIS-1170: Added proposed guidelines for error validation message responses