Python cleanup

CherryPy won't be used so remove it.
Use wsgi and email that comes with python.
Remove wsgi and email standalone recipes.
Update bottle and rocket to use new packages.
diff --git a/common/recipes-devtools/python/python-bottle.inc b/common/recipes-devtools/python/python-bottle.inc
index d578c8b..cc95998 100644
--- a/common/recipes-devtools/python/python-bottle.inc
+++ b/common/recipes-devtools/python/python-bottle.inc
@@ -13,8 +13,7 @@
 inherit setuptools
 
 S = "${WORKDIR}/${SRCNAME}-${PV}"
-# bottle doesn't send email...it uses a utility in here to parse rfc1123 and rfc850 timestamps.
-RDEPENDS_${PN} += "python-email-utils-standalone"
+RDEPENDS_${PN} += "python-email-utils"
 
 PROVIDES += "${PN}-app"
 PACKAGES += "${PN}-app"