Display Hub links in the hub profile page.

https://github.com/us-ignite/us_ignite/issues/334
Updates to GCTC splash page
Merge branch 'master' of https://github.com/us-ignite/us_ignite
updatig category list for actioncluster
Merge branch 'master' of github.com:us-ignite/us_ignite into ui-update

* 'master' of github.com:us-ignite/us_ignite:
  updatig category list for actioncluster
  Updates to GCTC splash page
  Display Hub links in the hub profile page.
UI improvements