Remove padding from date-range-filter arrow

Relates to #3465
Fix issue where admin nav would display in a Times-like font

Related to #3465

Conflicts:
	backend/app/assets/stylesheets/admin/shared/_icons.scss
Fix issue where admin nav would display in a Times-like font

Related to #3465

Conflicts:
	backend/app/assets/stylesheets/admin/shared/_icons.scss
Fix issue where admin nav would display in a Times-like font

Related to #3465

Conflicts:
	backend/app/assets/stylesheets/admin/shared/_icons.scss