Fix the user-model issues around aliases and alias selection. Fold Library Symbol Fields into Library Symbol Properties. Update to the new look. Fixes: lp:1744773 * https://bugs.launchpad.net/kicad/+bug/1744773 Fixes: lp:1766205 * https://bugs.launchpad.net/kicad/+bug/1766205 Fixes: lp:1786339 * https://bugs.launchpad.net/kicad/+bug/1786339
(cherry picked from commit 08b4463)