set strict options for scripts

deploy_static

@@ -1,6 +1,6 @@
 #!/bin/bash
 
-set -o errexit
+set -o errexit -o nounset -o pipefail
 
 ./validate_static
 ./process_static

process_static

@@ -1,6 +1,6 @@
 #!/bin/bash
 
-set -o errexit
+set -o errexit -o nounset -o pipefail
 
 rm -rf static_tmp
 cp -a static static_tmp

validate_static

@@ -1,6 +1,6 @@
 #!/bin/bash
 
-set -o errexit
+set -o errexit -o nounset -o pipefail
 shopt -s globstar
 
 jshint --verbose static/**/*.js