Build out stub UI for Explore feed. We need:

Community and For You tabs and a language picker button.

Community

1. When Community tab is selected, fetch feed data from T413367 and display basic article rows in sections.
2. Add a 3-dot button to each section with options "Hide this card" and "Hide module". Hide module should modify user defaults selection in T427927. "Hide this card" should persist that identifier (ID = day + section type like "Top Read") to Core Data through the Explore Data Controller. Refresh community tab data.

3. In step 2, when tab data is refreshed, hide sections depending on selections in T427927, and hide sections depending which "Hide this card" identifiers are persisted in step 2 above.

For You

1. When For you tab is selected, fetch for you data from Explore Data Controller method (created in T413371) and display basic article rows in sections.
2. Add a 3-dot button to each section with options "Hide this card" and "Hide module". Hide module should modify user defaults selection in T427927. "Hide this card" should persist that identifier (ID = day + section type like "Top Read") to Core Data through the Explore Data Controller. Refresh for you tab data.

3. In step 2, when tab data is refreshed, hide sections depending on selections in T427927, and hide sections depending which "Hide this card" identifiers are persisted in step 2 above.