Add pelican-page-order plugin

.gitmodules

@@ -31,3 +31,6 @@
 [submodule "pelicanthemes-generator"]
 	path = pelicanthemes-generator
 	url = https://github.com/badele/pelicanthemes-generator
+[submodule "pelican-page-order"]
+	path = pelican-page-order
+	url = git://github.com/akhayyat/pelican-page-order

pelican-page-order

@@ -0,0 +1 @@
+Subproject commit 1e3ee850b8bef01bf8f573759c4a87c869db2b49