improve email regexp for 2char local parts and subdomain hosts

Author: Tom Hanoldt

src/input.validator.coffee

@@ -33,7 +33,7 @@ class @InputValidator
       number:  /^\d*$/
       tel:     /^[0-9/\-\+\s\(\)]*$/
       # coffeelint: disable
-      email: /^\s*([\w!#\$%&\'\*\+\-\/=\?\^`\{\|\}_~]+[\w\.!#\$%&\'\*\+\-\/=\?\^`\{\|\}_~]+[\w!#\$%&\'\*\+\-\/=\?\^`\{\|\}_~]+)@([\w0-9\-]{2,63}\.[\w]+)\s*$/
+      email: /^\s*([\w!#\$%&\'\*\+\-\/=\?\^`\{\|\}_~]+[\w\.!#\$%&\'\*\+\-\/=\?\^`\{\|\}_~]*[\w!#\$%&\'\*\+\-\/=\?\^`\{\|\}_~]+)@([\w0-9\-\.]{2,63}\.[\w]+)\s*$/
       # coffeelint: enable
 
     rules: