Bugfix fir IE8
Merge pull request #17 from SkyTruth/master

Bugfix fir IE8

Thanks! Looks great! Merging!!!!
Add Contribution guidelines
Update copyright and Contributing Guidelines
rename applications to projects
renaming, mostly slug related
Merge pull request #19 from PyBossa/issue-531-rename-apps-v2

Fixes #531
Merge with upstream project