Add SVPullToRefresh to Podfile.
Remove SVPullRefresh and add boilerplate for UIRefreshContro.
Add logic for loading on pull to top.
Merge branch 'master' of https://github.com/opfo/app into feature/profilesearch-infinitescolling

* 'master' of https://github.com/opfo/app:
  Fixed a small bug
  Added support for connecting the userProfileViewController a view showing the users questions and answers. Did some cosmetic changed as well.