Patch - Projects description editor

Pivotal story: https://www.pivotaltracker.com/story/show/64507678 
Original PR: https://github.com/AgileVentures/WebsiteOne/pull/539

- Failing cuke in `projects.feature:172` is passing. 
- Added `WaitForAjax` module in `helpers.rb`. 
- Added specs for `mercury_update` in `projects_controller_spec.rb` 
- Minor change in `_members_list.html.erb` 
  - removed `presenter.title_list` and changed html tag on `presenter.country` from `<p>` to `<small>` 
  - changed ordering of action links in pulldown