fix: minor date picker UX improvements

* improvement: Date Picker

* remove unused values

* fix: search results w/ valid date returning empty

* translations from locize

* styling select

* revert studyListDateFilterNumDays

platform/ui/src/components/studyList/StudyList.styl

@@ -176,7 +176,7 @@ table.table
       margin: 0 auto;
       color: var(--table-text-primary-color);
       font-weight: 400;
-      padding: 20px;
+      padding: 20px 8px;
       user-select: none;
       font-size: 15px;