Implement base layout for client actions, name, file size

[eloquence]

As specified here, we want to display actions (export/print), filenames and file sizes in a grid for consistent presentation throughout the client.

This issue should be resolved if:

• the download action is consistently displayed as in the spec
• the "encrypted file on server" is consistently displayed as in the spec (until files are downloaded)
• the file size for the file on server or on disk is displayed (updated as needed after the file is decrypted/downloaded) as in the spec
• filenames are displayed as in the spec

We should investigate the text width issue raised in the spec, but we may not have a full resolution for it yet.

Adding the "Export" action can be done in a subsequent iteration (we can just leave the space blank for now after a file has been downloaded). Active states during download/decryption are also out of scope.