Modified donor_slider files to accomodate 3 platinum donors, and smarter sizing.
Removed special Microsoft case and slightly adjusted aspect ratio of image.
Randomized order of items in donor_slider
Smarter randomization.
Smarter randomization.
Merge branch 'staging' of https://github.com/code-dot-org/code-dot-org into donor_slider_update
Smarter randomization.
Comment update
Merge pull request #290 from code-dot-org/donor_slider_update

Donor slider update