EUCA-7875

There exists some random image data in both app.data.images and app.data.allimages when logged into AWS.

It's not clear on where they come form, but need to clear up those random image datam otherwise it messes up the fetch conditions.
Increasing the loading resource gif duration from 15 sec to 20 sec timeout.
Merge pull request #244 from eucalyptus/EUCA-7875

Euca 7875