[Table Visualization] Research and add error handling

[ananzh]

Currently, we don't have any error handling for the new table vis. This might be an issue, for example:

handlers.uiState.set('vis.columnsWidth', nextState);
handlers.uiState.emit('reload');

We need some error handling for the case that handlers.uiState is undefined. Maybe it's something we want to fail earlier on or else wait for.

[ananzh]

Will work on this after 1) hookup table to vis builder and 2) add tests