Finish up basic dates tab support (#70)

- Drop mock data, call real API instead
- Call course metadata API for general info, not the dates API
- Mark text as translatable
- Add badges and timeline dots, group same-day items

AA-116

src/data/api.js

@@ -3,9 +3,6 @@ import { getConfig, camelCaseObject } from '@edx/frontend-platform';
 import { getAuthenticatedHttpClient, getAuthenticatedUser } from '@edx/frontend-platform/auth';
 import { logError } from '@edx/frontend-platform/logging';
 
-// FIXME: remove this WIP hack once we're done developing the tab
-import datesTabData from './dates';
-
 function overrideTabUrls(id, tabs) {
   // "LMS tab slug" to "MFE URL slug" for overridden tabs
   const tabOverrides = {};
@@ -53,11 +50,7 @@ export async function getCourseMetadata(courseId) {
 }
 
 export async function getTabData(courseId, tab, version) {
-  if (tab === 'dates') {
-    return camelCaseObject(datesTabData());
-  }
-
-  const url = `${getConfig().LMS_BASE_URL}/course/${courseId}/api/course_home/${version}/${tab}`;
+  const url = `${getConfig().LMS_BASE_URL}/api/course_home/${version}/${tab}/${courseId}`;
   const { data } = await getAuthenticatedHttpClient().get(url);
   return camelCaseObject(data);
 }