GitLab

do not use disk_template in sorting algorithm

when image list is empty

using the skip_timeouts mechanism

handle invalid image responses while updating unknown image id

old compute/images api is removed, no need to fallback to this api for
missing images

After vncauthproxy responds that it has successfully connected to the
backend server, we need to make sure that the VNC server settings
haven't changed (due to VM migration, or a malicious user destroying a
VM to exploit the VNC ports reuse).

* listflavors - list all flavors
* createflavor - create one or more flavors
* modifyflavor - modify a flavor

* listservers
* showserver
* modifyserver

- removed feedback and logout buttons (now provided by the separate identity
  management application)
- removed username uniq display

Fixes some flavor constrains issues

Catch attempt to delete inexistent key