Make tables use all available space

[mnishiguchi]

This is a minor enhancement. Currently table widths depend on the max text length, which can lead to tables in different widths especially when the display is large. Just by specifying the 100% width, we can make them look consistent.

.search-table {
  width: 100%;
}

I think alternatively we could set max-width to a certain value.

.search-table {
    max-width: 75rem;
}

[fhunleth]

Looks good to me. Thanks!