I pushed a new version of my website, but now the CSS and static images are not deploying properly.
Here is the messed up page: http://www.gaiagps.com
Appeng
Following is what has worked for me.
Serve your css file from the static domain. This is automatically created by GAE.
//static.{your-app-id}.appspot.com/{css-file-path}
Deploy your application. At this point your app will be broken.
change the version of the css file
//static.{your-app-id}.appspot.com/{css-file-path}?v={version-Name}
deploy again.
Every time you change the css file. you will have to repeat 2,3 and 4.