Cleanup cities.pl and .tmpl - major

Cleanup cities.pl and .tmpl - major

80% of the javascript was junk.
Bad check failed on non-existant field borrowers.select_city.
Enabled warnings.  Reduced "StringSearch" to 3 lines, removed unused args and vars.
Fixed row highlighting and removed "toggle" code.  Etc.

TODO: Stop redirecting to the same page.  Instead get the correct data and show it
on THIS pass.

Signed-off-by: Galen Charlton <galen.charlton@liblime.com>
Signed-off-by: Henri-Damien LAURENT <henridamien.laurent@biblibre.com>