Support links with existing query parameters.

Closes #203

Fixed minor problems with some specs running `beforeEach` and/or `afterEach` outside of their describe callbacks.
Changed download button text from "Download" to "Process Download"

Also changed color of download button from `primary` to `info`.

Closes #205
Moved download link to below the download button.

Closes #206
Default to sort by id and the first column in the related tables grid.

Closes #216
Merge pull request #220 from agrc/minor-stuff

Minor stuff