Searching

It would be cool if TableTool had some sort of basic search capability, even if it just searched the whole document (and didn't have options to limit searches by columns or whatever).

The issue requests basic search across the whole document, but it does not name files, tests, or an entry point. Start by locating the document editing and search-related code in TableTool, then define the search interaction and verify that matching content can be found across the document.

Written by the indexing model from the issue text.