Merge develop into desk-v2

Before

List page, before (beta.63). The CRM Lead list with the Leads panel open.

After

List page, after (rc.1). Same page. Only the "20 of 47" footer text moves, by a pixel. The panel row and the rail cells are still links.

Before

Record page, before (beta.63). A CRM Lead with the side panel.

After

Record page, after (rc.1). The side panel's field rows are a few pixels taller. That is rc.1's line-height change on the tight text styles (

Before

Code field, before (beta.63). A Client Script's Details tab.

After

Code field, after (rc.1). The rewritten code field: line numbers, folding and highlighting are kept. The active-line highlight now stops sho