Fix issues found after deployment

Change the URL on the client settings to the real one.
Instead of the hardcoded one for testing.
Only one this time, this testing business is working!
Check in popup for the visualization view

I don't want to include ionic just to get a popup. Found a CSS-only solution at
http://www.script-tutorials.com/demos/222/index.html#close
which is what I have implemented
Switch the default display to also use ionic

Using something other than iconic with the ionic tab bar causes the tab bar to
be duplicated multiple times (like the "stamp" option in scratch). Fortunately,
we just converted the gamified display to ionic, so this change was easy.

Couple of bonus fixes:
- Removed the message from the HTML because it was taking up too much real
  estate, and the dropdown made it pretty clear anyway
- Added the new blurb on iOS
Add the iOS blurb to the working gamification window

Pretty straightforward change
Merge pull request #31 from shankari/gamification

Convert default view to also use ionic