Moved id's of unfeatureImage and featureImage
Made the difference between featured images a data attribute
The data attribute is featureStatus and it has values of either false or true
Previously, the difference was the idr
Added data attribute for imageid to featureImage button
Added functionality to feature and unfeature buttons
Merge branch 'master' of https://www.github.com/GlimmerLabs/MathOverImages