Initial change of logic for filtering enrollment list.
Merge branch 'develop' into feature/update_section_classlist_logic
Fix logic that returns enrollments that can be added to a section based on unique groupings of user_id and role that are not already present in the given section.  Tests to follow later.
Update to add logic to disable delete of people in Primary sections in template
Update based on code review.  Removed code not applicable to add
Merge pull request #82 from Harvard-University-iCommons/feature/sections_jy

Update to add logic to disable delete of people in Primary sections
Add spaces after comma
Merge branch 'develop' into feature/sections_jy
Merge pull request #83 from Harvard-University-iCommons/feature/sections_jy

Feature/sections jy
Styles for home page of the section tool to address usability issues found during testing.
Added icons for removing and adding users to a section.
Added tooltips to the icons on the section homepage
Merge branch 'develop' into feature/sections_css_adjustments

Conflicts: (Resolved)
	add_people/templates/add_people/section_list.html
	add_people/templates/add_people/sis_enrollment_sections.html
Move role_key and new method to filter down enrollment list for adding to section into a separate "utils" module.  Modify section_class_list view code and tests to use this new utility.  Add new test class for utility method.  Updated/added method doc strings.
Merge branch 'develop' into feature/update_section_classlist_logic
Update section_class_list view method description.
Improve readability of logic that checks if there is an enrollment_count on section - use truth value testing instead of slugify.
Merge pull request #84 from Harvard-University-iCommons/feature/sections_css_adjustments

Feature/sections css adjustments
Merge branch 'develop' into feature/update_section_classlist_logic
Merge pull request #85 from Harvard-University-iCommons/feature/update_section_classlist_logic

Feature/update section classlist logic
Merge branch 'develop' into feature/eric_section_delete_confirmation