This PR incorporates a date filter for assets, similar to the filter used by the sitetree filter.
Since the column shown in the grid in AssetAdmin is the Created column, this is the same column the filter acts on. The SiteTree filter however acts on the LastModified column.
The behat test cases rely on an extension to behat to allow the modified date of staging files to be specified. Do not merge before silverstripe/silverstripe-behat-extension#32
API Filter by date created for files
Added test cases
Do not merge before silverstripe/silverstripe-behat-extension#32
The test cases above fail due to the behat extension update being missing. Merging silverstripe/silverstripe-behat-extension#32 will fix this.
Since the above PR has been merged, this is good to go.
I restarted the build and it all passes now . :)