[Enhancement] - Resize Preview, Share, and Delete columns in Documents table

[andycwilliams]

Describe the Current Behavior/Feature:

Currently, the Preview, Share, and Delete columns in the desktop version of Documents are wider than they need to be. As a result, less space is available for others such as Name and Description.

Rationale:

It would be good for those to have more room so they're more immediately readable for the user.

Proposed Changes:

Adjust the column sizes so the icon button ones are smaller and Name and Description are larger.