ERM Comparisons: filter buttons contain wrong text

In the ERM Comparisons app search and sort filter pane there are buttons for the lookup of packages and agreements.

The buttons should contain the text "Select package" and "Select agreement" rather than "Link package" and "Link agreement"

This also applies to the buttons in the ERM comparisons edit pane.

Note that the "Link xxx" buttons are used elsewhere and should not be changed in other contexts, only in this one.