Merge pull request #11 from suhailvs/master

Fixed the remaining
Left from last doc

- in explore data page, in the news section, bullets are still not centered
- hide the affix tabs when not applicable
- the header needs to stick at the top of the page as the user scrolls down
The homepage news section should load data from api

this link: http://blockedonline.com/blocked/data?homepage
In the homapge, don’t show the news description but just the title, agency and link it to the source.
in the about page, make another tab News like Privacypolicy

it uses http://blockedonline.net/blocked/news/
GET INVOLVED

+ Download app buttons for Mac and Windows users should be brought closer together. Please shift them 45px inwards
+ Icons aren’t consistently aligned with text
+ In the “Work with us” section:  “Data Visualizations”, “Other Forms of Design” and “Web Development” should be 21 px