Further clean-up in osmo-sgsn -> osmo-gbproxy migration

* fix manuals builds, including vty reference generation
* fix vty tests
* remove manuals from osmo-sgsn
* update .gitreview
* update osmoappdesc.py

Related: OS#4992
Change-Id: I80439ab0d21a3fb33f38da42acbfe3fbb0941b91
diff --git a/Makefile.am b/Makefile.am
index 47988ca..bb4758b 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -9,9 +9,9 @@
 	$(NULL)
 
 SUBDIRS = \
-	doc \
 	include \
 	src \
+	doc \
 	contrib \
 	tests \
 	$(NULL)