#11 Patterns for primitive types not correct

[stephane bouchet]

hi, there is some error in patterns in ajaxforms 1.0.4 when using primitives types for inputs :

i follow the guidelines from w3c (http://www.w3.org/TR/xmlschema-0/#CreatDt) and there is my corrections :

- nonPositiveInteger :
0 should be allowed (only -0 in ajaxforms)

- nonNegativeInteger :
0 and non signed numbers should be allowed (+xxxx in ajaxforms)

-positiveInteger :
+0 should not be allowed

in addition, there is a bug with "url" type : there is a missing 's' char in the end of "patterns" :)

Cheers,

Stéphane