LP2023803 Replace btn-warning with appropriate color

LP2023803 Replace btn-warning with appropriate color

Replaces all instances of .btn-warning, which has poor color contrast,
with other button colors. Actions that reset forms or delete data use
.btn-destroy; other instances may use .btn-info or btn-normal depending
on their context.

Signed-off-by: Stephanie Leary <stephanie.leary@equinoxoli.org>
Signed-off-by: Bill Erickson <berickxx@gmail.com>
Signed-off-by: Galen Charlton <gmc@equinoxOLI.org>