burnin: Fix a bug in '_delete_floating_ips'

Renew the list of floating IP objects as it may have been changed
(i.e. a port may have been deleted).
astakos: Typo fix
pithos: Optionally open object's content inline in the browser.

Refs: #5019
docs: Update pithos api guide.

Document content disposition type enforcement.

Refs: #5019
astakos oa2: Early failure in case of conflicting client information.

Catch earlier requests containing conflicting client identification
(client_id) and client authorization (authorization header).
astakos oa2: Handle unicode query parameters in the redirection endpoint
pithos: Retain query parameters during view authorization code grant.

Include view query parameters in the Redirection Endpoint
astakos: Remove dependency on urltools.
astakos: pep8 fixes
snf-common: Fix python2.6 compatibility
burnin: Search all public networks

Previously burnin tried to create a floatingIP from the first public
network found. But this public network may be full.
This patch fixes '_create_floating_ip' so it will try all public
networks until it succeeds.
snf-common: Comment out unused code in urltools
pithos: Fix excessive RADOS threads.

When a RADOS ioctx is acquired, new threads are spawn in the background by
librados. Make sure we do not instantiate multiple RADOS ioctx, but instantiate
only one and reuse it.
snf-ci: Search all public networks

When creating a new floating IP try all public networks
until we find one that is not full.
pithos: Create index on nodes.latest_version
pithos: Pep8 fixes
astakos oa2: Fix further unicode issues
pithos: Fix further unicode issues
snf-ci: Fix the branch name for pithos webclient

When cloning the pithos webclient, snf-ci tries to checkout a branch
with the same name as the synnefo one (if such branch exists). To do so
it gets the list of all branches using the 'git branch' command. But
'git branch' uses the pager and so the command's output is filled with
garbage. This patch fixes that by telling git to not use the pager.
astakos: Add placeholder to inputs with no label