Fix couple of bugs

- Just Announced filter not showing up
- Independent provider page returns a 404
Redirect uppercase university/instution slugs to a lower case version
Lowercase the instituion/universites slug when generating url
Update the default sorting so that self paced courses are shown above ongoing courses and courses further down in the future
Update gitignore file to ignore phpstorm files
Add a page for ten most post popular courses in may 2014.
Tweak the title of top 10 page to include "starting"
Add the base url to og:url for top 10 may post
Categorize a course starting a day before as upcoming so that it shows up at the top
Add May 2014 MOOC Report
Added the MOOC Report controller action
Add MOOC Report newsletter template for May 2014
Use the provider or institution image as the open graph image for courses
Add the og imageurl to the course details array
Remove twitter:image from the course pages to solve warnings from FB open graph url linter
Add newsletter for May programming MOOC Report
Added best and worst rating to aggregate rating to fix google webmaster errors
Fix event schema errors mentioned in google webmasters
Update recommendations
fix bug when a course which recent and just announced doesn't show up in either lists