pithos: Set v0 size on Archipelago request
cyclades: Update vncauthproxy requirement

Require vncauthproxy>1.5.
docs: Update docs for 0.16
Add archipelago to Pithos backend dependencies
Merge pull request #214 from cnanakos/release-0.16

Update docs and fix Pithos Archipelago request
Add NEWS for Synnefo 0.16rc1
docs: Update 0.16 upgrade guide
docs: Link v0.16 Chaneglog and NEWS in admin guide
Merge remote-tracking branch 'grnet/release-0.16' into my-develop

Conflicts:
	version
astakos: Move code under synnefo.astakos.*
astakos: Update references
astakos: Update external references
cyclades: Move code under synnefo.cyclades.*
cyclades: Update references
cyclades: Update external references
branding: Move code under synnefo.branding.*
branding: Update references
branding: Update external references
pithos-app: Move code update synnefo.pithos.*
pithos-app: Update references