Try to fix travis docker setup + remove jquery validator override (#788, #616)

.travis.yml

@@ -8,7 +8,7 @@ before_install:
     - sudo apt-key adv --keyserver hkp://p80.pool.sks-keyservers.net:80 --recv-keys 58118E89F3A912897C070ADBF76221572C52609D
     - sudo apt-get update
     - sudo apt-key update
-    - sudo apt-get -qqy -o Dpkg::Options::="--force-confdef" -o Dpkg::Options::="--force-confold" install docker-engine=1.11.1-0~precise
+    - sudo apt-get -qqy --force-yes -o Dpkg::Options::="--force-confdef" -o Dpkg::Options::="--force-confold" install docker-engine=1.11.1-0~precise
     - sudo rm /usr/local/bin/docker-compose
     - curl -L https://github.com/docker/compose/releases/download/1.7.1/docker-compose-`uname -s`-`uname -m` > docker-compose
     - chmod +x docker-compose

application/views/partial/header_js.php

@@ -44,8 +44,4 @@
 		}
 	});
 
-	$.validator.methods.number = function (value, element) {
-		return this.optional(element) || /^-?(?:\d+|\d{1,3}(?:[\s\.,]\d{3})+)(?:[\.,]\d+)?$/.test(value);
-	}
-
-</script>
+</script>