Refactoring indesign.py module

[Starou]

• factorize duplicate code in the different functions
• delete the javascript file from the ftp server when the operation is finished (close_all_documents() and list_profiles()
• Remove the zip format in save_as() ?
• Change the signature of save_as() : remove the indesign_ prefix in parameters. Later...
• remove the clean_workdir flag in save_as(): always clean.