AETHER-2047 Adding page for VCS management

Also
* fixed problems in "index.rst"
* removed unused "sop.rst"
* updated "dictionary"
* added details of DeviceGroup "monitoring"

Change-Id: Ie76076defec5b29238ca93723b398e5d4aa1b8af
diff --git a/dict.txt b/dict.txt
index 4d21ab3..5026af7 100644
--- a/dict.txt
+++ b/dict.txt
@@ -91,3 +91,4 @@
 webpage
 webserver
 yaml
+Downlink
\ No newline at end of file