Eliminate duplicate toctree references

Integrate recently added repos with doc project sections
Remove references from releases/repolist.rst
Remove vnfreq and vvp from developing section

Change-Id: I22ed97db8740ddb4080340afbad00f0485858f22
Issue-ID: DOC-312
Signed-off-by: Rich Bennett <rb2745@att.com>
3 files changed