[minor] add profiling in development server

webnotes/app.py

@@ -9,6 +9,7 @@ from werkzeug.wrappers import Request, Response
 from werkzeug.local import LocalManager
 from webnotes.middlewares import StaticDataMiddleware
 from werkzeug.exceptions import HTTPException
+from werkzeug.contrib.profiler import ProfilerMiddleware
 from webnotes import get_config
 
 import mimetypes
@@ -58,7 +59,11 @@ application = StaticDataMiddleware(application, {
 	'/': 'public',
 })
 
-def serve(port=8000):
+
+def serve(port=8000, profile=False):
+	global application
 	from werkzeug.serving import run_simple
+	if profile:
+		application = ProfilerMiddleware(application)
 	run_simple('0.0.0.0', int(port), application, use_reloader=True, 
 		use_debugger=True, use_evalex=True)

wnf.py

@@ -137,6 +137,7 @@ def setup_utilities(parser):
 		help="Set administrator password")
 	parser.add_argument("--mysql", action="store_true", help="get mysql shell for a site")
 	parser.add_argument("--serve", action="store_true", help="Run development server")
+	parser.add_argument("--profile", action="store_true", help="enable profiling in development server")
 	parser.add_argument("--smtp", action="store_true", help="Run smtp debug server",
 		dest="smtp_debug_server")
 	parser.add_argument("--python", action="store_true", help="get python shell for a site")
@@ -593,9 +594,9 @@ def smtp_debug_server():
 	os.execv(python, [python, '-m', "smtpd", "-n", "-c", "DebuggingServer", "localhost:25"])
 	
 @cmd
-def serve(port=8000):
+def serve(port=8000, profile=False):
 	import webnotes.app
-	webnotes.app.serve(port=port)
+	webnotes.app.serve(port=port, profile=profile)
 
 def replace_code(start, txt1, txt2, extn, search=None, force=False):
 	"""replace all txt1 by txt2 in files with extension (extn)"""