javascript fix for multiple submits on delete
more js fixes
pull from dev

Merge branch 'feature/sections_add5_CS' of https://github.com/Harvard-University-iCommons/icommons_lti_tools into feature/sections_add5_CS

# By Bermudez, Jaime (1) and Roderick Morales (1)
# Via Bermudez, Jaime (1) and others
* 'feature/sections_add5_CS' of https://github.com/Harvard-University-iCommons/icommons_lti_tools:
  Added a class to the body for media queries so that the pagination doesn't wrap
  Add missing letter range of K-L to buckets.

Conflicts:
	add_people/templates/add_people/section_details.html