Bugfixing after secons session: typo in file close in ctxt manager explanation in mod 08 and wrong module name in mod 13
Merge pull request #12 from pablito56/bugs_post_session

Bugfixing after second session
Merge pull request #13 from lerovitch/master

some basic introductory exercises
Typo in file close
Merge branch 'master' into bugs_post_session
Merge pull request #14 from pablito56/bugs_post_session

Typo in file close
Index of advanced block
Merge branch 'bugs_post_session'
Moved descriptors examples to temporal 'old' folder inside advanced
Moved objects modules to temporal 'old' folder
Exercise 1 of mod 01 scopes and namespaces
Module 01: scopes
Renamed mod 01 files
Modules 01 (scope & namespaces) 02 (globals and locals) and 03 (decorators)
Minor update in decorators
Modules 3 (decorators), 4 (advanced decorators) and 5 (attributes look up). WIP in objects data model
Descriptors module
Added cooperative super call pattern module
Slots and properties module
Metaclasses module