Add adjustable table column widths in the document page

Currently, you cannot change the width of the columns by sliding the bars between them. This would be desirable, as most document titles are too long (with much of the title being replaced by dots), potentially making it difficult to find certain documents.

Start by locating the document page and its table implementation, then inspect how column widths and document titles are currently rendered. Add draggable separators so users can resize columns, and verify that longer titles become easier to read without being unnecessarily replaced by dots.

Written by the indexing model from the issue text.