pgadmin 1.20.0 -> 1.22.1

[adamgordonbell]

Things done:

• Tested using sandboxing (nix-build --option build-use-chroot true or nix.useChroot on NixOS)
• Built on platform(s): NixOS
• Tested compilation of all pkgs that depend on this change using nix-shell -p nox --run "nox-review wip"
• Tested execution of all binary files (usually in ./result/bin/)
• Fits CONTRIBUTING.md.

[mention-bot]

By analyzing the blame information on this pull request, we identified @Wyvie, @domenkozar and @edolstra to be potential reviewers

[joachifm]

db/keywords.c:33:27: fatal error: parser/kwlist.h: No such file or directory
 #include <parser/kwlist.h>

                           ^
compilation terminated.
Makefile:5536: recipe for target 'db/keywords.o' failed
make[3]: *** [db/keywords.o] Error 1
make[3]: Leaving directory '/tmp/nix-build-pgadmin3-1.22.1.drv-0/pgadmin3-1.22.1/pgadmin'
Makefile:3568: recipe for target 'all' failed

[fpletz]

This builds fine for me on the current master, not sure why travis failed.

[fpletz]

Restarted travis but it now fails with a merge conflict. Again, not sure why, but I guess this change should be alright as I tested this locally with chroot against master and pgadmin3 works.