Wipro Community - Issues noted by reviewers

[birdofpreyru]

1. ./src/shared/containers/tc-communities/Header/index.jsx still contains references to 'tcCommunities.header'
   From the challenge details page, this should be changed to 'tcCommunities.meta'
   Should be properly updated in the following files as well :
   -- ./src/shared/reducers/leaderboard.js
   -- ./src/shared/reducers/tc-communities/header.js

2. ChallengeListing : " For this challenge we want to update it to get filter so that tag comes from from the community meta data endpoint (see header section, and the mock API there)"
   This is not implemented, the tag to be used for filtering ('Javascript' for demo purpose) should be configured (i.e in future returned by the API) in /src/server/tc-communities/wipro/metadata.json