Resizing and fixing images on orgs page
for news stories and refactored images for people too

https://www.pivotaltracker.com/story/show/46700161
Correct typo
Add new MainstreamCategory for UK Export Finance
Merge pull request #480 from alphagov/uk-export-mainstream-category

UK Export Finance mainstream category

https://www.pivotaltracker.com/story/show/48492781
Merge pull request #475 from alphagov/image-resizing-fixing-on-orgs

Resizing and fixing images on orgs page for mobile view

https://www.pivotaltracker.com/story/show/46700161