Fixes in the application

 o Different users can create an application with the same name
 o If there are errors during the creation of an application let's report it

git-svn-id: svn://svn.forge.objectweb.org/svnroot/contrail/trunk/conpaas@4928 ef35cc4a-2640-4bbf-98bc-65920db7d8ae
conpaas-docs: mention director installation script


git-svn-id: svn://svn.forge.objectweb.org/svnroot/contrail/trunk/conpaas@4929 ef35cc4a-2640-4bbf-98bc-65920db7d8ae
conpaas-core: take partially created nodes into account when assigning IPOP addresses

Partially created nodes are also important when it comes to select an IPOP ip
address for the next node to be created. This patch allows to properly allocate
IPOP ip addresses when adding multiple nodes to a given service.


git-svn-id: svn://svn.forge.objectweb.org/svnroot/contrail/trunk/conpaas@4930 ef35cc4a-2640-4bbf-98bc-65920db7d8ae
conpaas-core / conpaas web hosting service: validate cloud name on service startup


git-svn-id: svn://svn.forge.objectweb.org/svnroot/contrail/trunk/conpaas@4931 ef35cc4a-2640-4bbf-98bc-65920db7d8ae