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Support #3514

This typo caused undesired behavior when deleting a deleted network

Bug #3547

Merge everything to kamaki.clients

Remove multiple hierarchies of connection classes (== abandon support for
    alternative connection methods, e.g. for requests from pypi)

New connection classes are
- RequestManager
- ResponseManager
Semantics:
    RequestManager constructor commits a request without performing it
      but it performs all sanity checks for url, path, method and params
    RequestManager.perform will perform the commited request, if called
    ResponseManager constructor needs a RequestManager instance
    ResponseManager.(various properties)
        request is pooled from a ContextManagerPool (objpool) when needed.
        Results are cached and used as long as the ResponseManager instance
        is alive

Remove KamakiConnection/ResponseErrors, use ClientError wrapers for everything

Remove the connection livetest

TODO: Adjust unittests

Replace calls of the form unicode(v) to the equivalent" '%s' % v

Replace calls of the form unicode(v) to the equivalent" '%s' % v

in client

CLI bug: deep-level commands malfunction

wait for server to reach state (e.g. while building)

astakos imports an anused (and soon deprecated) module

added flavors_get, images_get/delete/post/put

servers_get/post, networks_get/delete/post/put with generic
arguments id and command are now used by oldern, convenience
calls. E.g.
    networks_get(100, 'action') with try
    GET http:.../networks/100/action
so it is used by list_networks

Seperate Client to Client and HTTPConnection
The later is put in a separate package kamaki.client.connection
It manages headers, params, method, url and data of a connection
but the actuall http connection is not implemented at this
abstract level
There is an HTTPRequest class extention of HTTPConnection in the
same package. It implements connection using requests package
so basicaly it replicates the connection procedure that was used
in kamaki so far.
Minor modifications were nessacary at every client lib package

Setup is now aware of gevent and commands package

Fixed colors in flavor and image error messages
Pretyfied image client code

Fixed bug with return value
Modified disconnect to take only nic_id as arg