Make the ImageDescription field of the dialog wizard overwrite the
DESCRIPTION image property.

In the cli output classes this method will clear terminal screen if
the standard output is a terminal.

If snf-image-creator does not find any passworded user, then the
USERS metadata field is not created at all.

A user can now create and upload an image using the wizard

The system does not perform anything yet when in wizard mode.

Create the new python module to host the aforementioned code.

If present in the kamaki configuration file, the user will read
the ~okeanos credentials using the kamaki config interface.
Whenever the user changes the ~okeanos credentians, the changes are
pushed back to kamaki.

Not fully implemented yet

Fixed many `E127 continuation line over-indented for visual indent'
errors

Before extracting an image or registring it with cyclades, the image
properties are populated with metadata concerning excluded deployment
tasks.

Most partition manipulation programs leave 2048 sector empty space
after the last partition.

The method used a wrong warning output function

vfs_uuid is more suitable for this and it whas added before blkid
in guestfs, hence it is supported in more guestfs versions.

Inform the user about metadata changes performed during syspreps
execution or image shrinking.

Also fix various issues. snf-image-creator-dialog is almost ready.
Some `Help' entries are missing.

Also create a new output class (InfoBoxOutput) to be used when
performing syspreps

This method returns a sysprep object with a given name. Now,
(enable,disable)_sysprep work with sysprep objects instead of sysprep
names

The do_sysprep method was not updated to comply with the changes
made in list_syspreps method

Populate Sysprep entry in "Image Customization Menu". Not fully
working.

This method takes a sysprep object as argument and returns the name
and a description for this object.

The method used to return 2 lists of enabled and disabled sysprep
object. Since sysprep objs contail an `enabled' attribute, it is easy
to determine which of those are enabled and which are not. There is
no need to return 2 seperate lists.

This dir will host help files used by snf-image-create-dialog

Image properties manipulation works fine.

Extract and Register menu entries work fine.

Otherwise the registration may fail.

If no customization is to be applied the image should be mounted
readonly.

Let the application decide what to do with them. If image-creator
receives an error from kamaki it will terminate. But this may not be
the proper thing to do for an interactive application like
image-creator-dialog

snf-image-creator-dialog is a dialog based version of snf-image-creator
Nothing works yet

Add an option to DiskDevice's mount method to allow readonly mount