new syntax is available [repo/]image[:version]
first command updated is delete

This also change underlying way of initiliaze a repository.
A repository can now be defined and be innaccessible

Signed-off-by: Seblu <sebastien.luttringer@smartjog.com>

seblu: fix some code

Signed-off-by: Seblu <sebastien.luttringer@smartjog.com>

Signed-off-by: Seblu <sebastien.luttringer@smartjog.com>

This can be avoided by -p

Arrow is now relative this allow to pass context of arrow
no more verbose mode. Soft is verbose except in quiet mode

Concept of data was changed to payload.
Payload is not necessary a tarball of a file or a directory, but, directly a file without tarball around.
This is useful have the same md5 on data/payload and win some space during repo adding.
Now data which come with image are represented by class Payload and all operation are located inside. This is cleaner!
Payload also handle orginial information (mtime,uid,gid,md5,size,mode)

This changement require a lot of changement in Repository and RepositoryManager class

This commit change a lot of things in installsystems way of life.
Repository cache is now disabled on access to remote repository done directly.
New database and tarball format

Now use databases function to delete files from repository

New module tools offer functions to base is class and also to setup scripts.
Drop RepositoryBase class.