Update for playtest-20140719.
Merge pull request #150 from pchote/playtest-rc4

Update for playtest-20140719.
Add a news post for the new release.
Update gamenews.
Update download ids.
Merge pull request #152 from pchote/july-release

July release
Added New D2K images wit concretes.
Merge pull request #153 from MustaphaTR/new-d2k-images

Added New D2K images with concretes.
use new orabot account
Merge pull request #155 from Mailaender/orabot

Use the new deployment bot account
palette index screenshots
Merge pull request #156 from Mailaender/convert-palette

Recompressed screenshots
add a meta description
add Open Graph meta data tags

Conflicts:
	layouts/default.html
Merge pull request #157 from Mailaender/meta

Added metadata tags
fix w3c error: missing text alternatives for images
Merge pull request #158 from Mailaender/w3c-img-alt

Fixed a W3C validation tool error
Update download page text with new OS X requirements.
News post for the September playtest.
Update playtest id.