Set a minimum width for dropdown menus

[brianlove]

Ensure that each dropdown menu has a minimum width.

Closes #143

[github-actions[bot]]

No need for rebasing :+1: behind_count is 0 ahead_count is 1

[github-actions[bot]]

JavaScript Coverage

Summary

Lines	Statements	Branches	Functions
	63.47% (285/449)	57.55% (99/172)	67.33% (101/150)

Modified Files • (63%)

File	% Stmts	% Branch	% Funcs	% Lines	Uncovered Line #s
All files	63.47	57.55	67.33	63.4
components	62.4	59.73	65	62.22
ListViewTable.jsx	91.11	76.47	93.75	92.3	159, 190–191, 196–199, 250, 283–284, 318, 333, 425, 456, 491
static_data	93.75	100	100	93.75
table_columns.js	100	100	100	100