Update Understanding guide
Feature #2826: Add description for RBD_FORMAT
Bug #2669: When registering a bzip2 compressed image, the size is not correctly reported
Feature #2625: Integrate cloud-init
Feature #2345: Tagged VLAN (trunk) support for VM guests
Feature #2556: Create image without filesystem on ceph datastore
Copy rnotes46beta to rnotes64rc
Revert "Copy rnotes46beta to rnotes64rc"

This reverts commit 29798ef60343d7c95ff3624e2be91245f934db7a.
Single release notes guide
Added 4.6RC new feature
Fix RN
Move the release notes to a single space
Merge branch 'master' of github.com:OpenNebula/docs
Rename 4.6 Beta to RC in rnotes
fix external links for the CLI and OCA documentation