Vast improvements to validation, based on suggestions by Rick Copeland.

Error handlers are now internal redirects, rather than browser
redirects.

Added error handler middleware. This needs some configuration improvements.

Made the project template much better, with some CSS, and a Kajiki-based
layout.

pecan/__init__.py

@@ -1,7 +1,9 @@
 from paste.urlparser import StaticURLParser
 from paste.cascade import Cascade
+from weberror.errormiddleware import ErrorMiddleware
+from paste.recursive import RecursiveMiddleware
 
-from pecan import Pecan, request, response, override_template, redirect
+from pecan import Pecan, request, response, override_template, redirect, error_for
 from decorators import expose
 
 __all__ = [
@@ -9,8 +11,10 @@ __all__ = [
 ]
 
 
-def make_app(root, static_root=None, **kw):        
+def make_app(root, static_root=None, debug=False, errorcfg={}, **kw):
     app = Pecan(root, **kw)
+    app = RecursiveMiddleware(app)
+    app = ErrorMiddleware(app, debug=debug, **errorcfg)
     if static_root:
         app = Cascade([StaticURLParser(static_root), app])
     return app